The path guards, the enumeration's reparse-point skip and the per-file attribute check all judged path strings, while the FileStream feeding the ZIP opened that string later (after earlier files were compressed). Under any recursive source folder a local user can write to, a subdirectory turned into a junction in that window made SYSTEM copy the junction target into the tenant-uploaded package.
PinnedSourceFolder holds each section folder open for the whole section (final path must equal the validated path, 8.3-expanded; FILE_LIST_DIRECTORY without delete share, so NTFS refuses renaming it or any ancestor) and opens each candidate with FILE_FLAG_OPEN_REPARSE_POINT, requiring the handle's final path to be exactly <canonical folder>\<relative path>; the archive is fed from that same handle. Manifest: FOLDER REJECTED (...) / SKIPPED (resolved outside validated folder) / FAILED (open). The race is pinned by a test that swaps the directory from the BeforeSourceFileOpen seam; on the previous code the same test copies the junction target.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Welcome/farewell mails rendered DomainName unencoded while the full-model
config PUT persisted it verbatim, letting a tenant admin ship attacker HTML
in a signed product mail to an arbitrary recipient. Encode at Render() and
the built-in builders, preserve DomainName from the stored row on PUT for
every caller, and only seed a strict DNS host name at first login.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
EffectRunner posts ClassifierVerdictIssued from inside DecisionStepProcessor.ApplyStep,
i.e. on the SignalIngress worker thread. With the bounded channel (256) full, Post's
back-pressure slow path blocked the channel's only consumer as a producer: nothing could
ever drain, every collector Post blocked behind it, and the whole decision/monitoring
pipeline froze silently until the max-lifetime watchdog.
Post now detects a call from the worker thread itself and routes the item to a
worker-local follow-up queue that WorkerLoop drains (iteratively, ahead of the channel)
right after the current item. Same processing path — ordinals, SignalLog, emit,
reduce, ApplyStep — just never blocking. Worker posts are accepted during the Stop
drain too, since the verdict belongs to the step being finished. ReentrantPostCount
exposed for observability/tests.
Tests: full channel + worker post releases a blocked foreign producer and processes the
verdict before the next channel item (fails against the previous code by hanging);
follow-up chain drained in order without recursion; verdict posted during Stop drain is
not lost. Docs: agent/decision-engine.md, agent/overview.md, log.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Agent endpoints authenticated per tenant but authorized session writes on a caller-supplied
session id. Sessions rows now carry the creating device identity (cert thumbprint + Intune
device id from the CN, or bootstrap code + serial) in primary-only Owner* columns.
SessionOwnershipPolicy evaluates register / telemetry / error-report requests against it;
SessionOwnerBindingObserver records the outcome on the request row, as a warning and as a
throttled SessionOwnerMismatch ops event. Nothing is rejected in this stage.
Agent: errorCode parsing on 401/403, one-shot session rotation on session_owner_mismatch
without feeding the auth-failure tracker, spool drop, agent_started.sessionRotated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
SecurityValidator accepted certificate bytes from X-Client-Certificate when X-ARR-ClientCert was
absent. That header is client-writable, and certificate content alone carries no proof of private-key
possession — the TLS handshake does. On platform-cert-enforced routes the fallback was unreachable,
but /api/bootstrap/* is excluded from the platform cert requirement and an EMPTY X-Bootstrap-Token
passed the function gate (Headers.Contains) while the validator treated it as no token and fell
through to the certificate stage, where the fallback header was parsed (live-verified 2026-08-29).
- Only X-ARR-ClientCert is read; the platform strips inbound copies even on excluded paths.
- IsBootstrapRoute (path prefix mirroring the exclusion entry): missing/empty token or unwired
BootstrapSessionService => 401 before the certificate stage.
- GetBootstrapToken treats an empty header as absent; the three bootstrap functions use it.
- Tests: BootstrapRouteFailClosedTests. Docs: client-cert-tenant-binding.md transport section.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Granting a cross-tenant role is "type the UPN" again. AdminIdentityResolver derives the home
tenant + object id from sign-in history (UserActivity: both values came from validated tokens,
most recent sign-in wins), falls back to the UPN domain of an onboarded tenant (tid only, oid
pinned on first sign-in), and never guesses when a UPN was seen under two tenants. Only a
never-seen domain yields 422 HomeTenantUnresolved, on which the portal shows a home-tenant picker.
- IMetricsRepository.GetSignInIdentitiesByUpnAsync (filtered UserActivity scan, grant-time only)
- Grant endpoints: homeTenantId/objectId optional overrides; bindings dropped from the list bodies
- Web: identity fields and binding pills removed from the delegated / tenant-group forms;
new collapsed "Identity bindings" panel in Tenant Management -> Edit Tenant Configuration
(bindings homed in that tenant; inline edit / remove via global/identity-bindings)
- Tests: AdminIdentityResolverTests; grant validation now accepts an absent home tenant
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
GlobalAdmins, DelegatedAdmins and TenantGroupAssignments resolved their role from the
upn/preferred_username claim alone while the API accepts tokens from every Entra tenant, so a
genuine token minted in a foreign tenant (re-registered domain) or by a recycled UPN in the home
tenant inherited platform admin.
- New AdminIdentityBindings table: RK = UPN -> home TenantId + ObjectId; in TableNames.All,
CriticalBackupTables and the full-restore-forbidden auth set; offboarding wipes bindings homed
in the offboarded tenant
- AdminIdentity (upn + tid + oid) is what GlobalAdminService.GetGlobalRoleAsync and
DelegatedAdminService.GetScopeAsync resolve on; order row -> binding -> Pro gate, fail-closed
(no oid / no binding / tid or oid mismatch => no role), mismatches logged at Warning
- Object id pinned on the first sign-in from the bound tenant (ETag-conditional, verified against
the stored winner); a foreign-tenant token can never claim the pin
- Grants (auth/global-admins, global/delegated-admins, tenant-group assignees) require
homeTenantId (+ optional objectId) and answer 409 instead of re-homing a bound UPN;
GET/PUT/DELETE global/identity-bindings is the audited rebind surface
- RequestContext.ObjectId; throttle identity prefers oid so shared UPN strings across tenants no
longer collide in one rate-limit bucket
- Web: home tenant / object id fields on the grant and assign forms, per-UPN binding pill
- Tests: binding verdict matrix + race semantics, middleware-level denials for foreign-tenant and
recycled-UPN tokens; OKF doc docs/backend/admin-identity-binding.md
Legacy role rows are inert until their binding is seeded - seed before deploying the backend.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Microsoft serves IME from several versionless hosts carrying different rings at once
(secondary = 1.104.102.0 while hotfix = 1.105.103.0), so "new version == what the
canonical URL serves" filed a 1.104 package under 1.105.103.0. The archiver now spools
each candidate, reads ProductVersion with a managed CFB/MSI reader (Linux host, no
msiexec) and uploads only a match; no match ends as Failed:VersionMismatch. A later
sighting with a version-authoritative CSP URL re-queues an unarchived version at most
once per 24 h (MsiArchiveUpdatedAt + Queued stamp).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The admin Data Sync Status only offered KEV and MSRC; the NVD stale-row refresh and the EPSS
re-score ran on the nightly timer alone. Both walks move out of the timer into
VulnerabilityCacheRefreshService (singleton, one in-flight slot per walk) so the buttons and the
nightly run share one code path and stamp the same timestamps (NvdCacheLastRefreshUtc — only for
a walk that reached every stale row; EpssLastSyncUtc). POST vulnerability/sync-nvd starts the
minutes-long, rate-limited NVD walk in the background and answers 202 (409 while running); the
page polls sync-status (nvdRefreshRunning, nvdLastRun) every 10 s meanwhile. POST
vulnerability/sync-epss runs synchronously and returns the counts. The timer skips a slot a
manual run holds instead of queueing a duplicate. Shared manifest regenerated for the two new
AdminConfiguration fields.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
EPSS: EpssApiClient (api.first.org, 100 ids per batch, unauthenticated, fail-soft). Score, percentile
and date live on the cached CVE — one batch per CPE fill, every cve_* row re-scored by the nightly
sync, only changed rows rewritten and with their original CachedAt. CveIndex carries EpssScore (max,
absent when unscored) and Priority; TopCve exposes both. CvePriority: act = CISA KEV, attend =
EPSS >= 0.1 or CVSS >= 9.0, track = rest — riskLevel/overall_risk semantics unchanged.
NVD throttle: Polly already retried 429s; the defect was that a refused answer came back as an
empty response and was cached as "0 CVEs" for seven days (also the negative auto-resolve cache).
NvdFetchResult separates answered from refused; nothing persists a refusal; a 429 opens a
process-wide cooldown (Retry-After capped at 120 s, else 30 s) so a run fails fast instead of
paying a retry chain per software item; hard-expired rows keep serving meanwhile. The NVD->cache
projection and the row builder are now single functions shared by the live fill and the sync.
CVSS v3 vector string persisted and shown. Portal: EPSS column + pill, priority pill, vector line;
exposure panel pills. MCP tool descriptions and the CVE-audit prompt name the fields. Terms
attribution + privacy page updated in the same change. OKF doc backend/vulnerability-correlation-sources.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Wire protocol: replace @modelcontextprotocol/sdk 1.30 with @modelcontextprotocol/server + /node 2.0.0
(zod 4). One per-request factory (mcp-server-factory.ts, extracted from index.ts) serves both eras
through mcp-http.ts: 2026-07-28 clients via createMcpHandler (legacy:'reject', JSON response mode,
server/discover, Mcp-Method routing), 2025 clients through the existing stateless transport with
enableJsonResponse — routed on the SDK's own isLegacyRequest predicate, because the built-in stateless
fallback would answer every current client with SSE and lose the gzip win. Capabilities now declare
listChanged:false explicitly; cacheHints stamp ttlMs/cacheScope:'private' on discover/list results
(5 min) and resource reads (60 min) — the catalog is role-dependent, so never public.
Authorization: advertise client_id_metadata_document_supported; an https client_id is a Client ID
Metadata Document resolved by cimd.ts (URL-shape checks, SSRF gate on every resolved address before any
request, no redirects, 5 s / 16 KB caps, exact client_id match, bounded redirect_uris, 10-60 min cache).
The requested redirect_uri still has to pass the dynamic-registration allowlist; HMAC-signed DCR
client_ids remain the fallback. Field limits moved to oauth-limits.ts (no import cycle).
Tests: mcp-http.test.ts drives the real v2 client over loopback HTTP in both eras and pins role parity;
cimd.test.ts / oauth-cimd.test.ts cover recognition, SSRF, validation, cache and the router paths.
Package 1.5 -> 1.6. OKF doc docs/mcp/protocol-eras-and-cimd.md; mcp-oauth-flow.md updated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
CmTraceTimeSkewRegression fired 7x in its first soak week; every checked case
was a relaunched agent re-tailing the IME log and uploading one burst holding
most of the session's IME samples with a continuum of ages whose median hit the
15-minute grid by chance. The tripwire now also requires >= 80 % of the IME
deltas (relative to the other side's median) to individually sit within 2 min of
some grid multiple; era-mixing regressions still fire. Fraction is carried in the
ops event message and details.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Microsoft released Windows Autopilot device association on 2026-08-25. The
DevPrep association lookup leaves shadow mode and becomes an accepting method
of the device-validation gate (after Autopilot and Corporate Identifier, before
the Cloud PC fallback; ValidatedBy = DeviceAssociation, transient -> 503). The
toggle is no longer Global-Admin-only: backend PUT revert and GaOnlyFields
dropped, settings toggle shown to every tenant admin under Device Preparation
with the shared consent rule. Landing hero carries a release pill linking to
the docs; dashboard tip added.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
First real calibration read (2026-08-27, four days instrumented) drove three
data-backed changes:
- Rule 5a: past grace (or with the agent provably gone), Device Setup done +
real-user desktop + zero app_install_failed reconciles to Succeeded
"completed (assumed)" (r5_assumed). r5-Incomplete devices re-enrolled at
2.6% - the succeeded background, not the ~29% failure level - and the
sampled desktop half had clean app records. No desktop or any failed app
stays Incomplete; rule 4 remains the immediate desktop+Hello reconcile.
- Rule 5 skips the AwaitingUser grace once either max-lifetime watchdog shape
(enrollment_failed/agent_timeout, agent_shutting_down/max_lifetime) is in
the stream: all five observed maxlife:r5_awaiting parks expired unhealed
while live-agent parks upgraded 7/26. The maxlife ingest appends its
trigger event to the read stream so the fact is never missed; late
telemetry still heals a terminal verdict. WhiteGlove rule 1b keeps its
park (its one episode healed).
- Drift radar: MinWindowHits raised to 10 (a 3-hit episode survived as
noise), per-path share regression now needs >=5 baseline hits (new or
renamed vocabulary cannot "regress"), and rule-shaped legacy:* paths count
into the silence/classifier-verdict group sums on both sides of the
2026-08-23 instrumentation cutover - dissolving the lift-124 silence
artifact. Episodes below the fire floors clear themselves.
Backend only; the new path appears in the calibration matrix dynamically.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
A delivery log names only the recipient, never the tenant the welcome mail was
for. The tenant console's search now matches the notification and contact
address as well as domain and tenant id; the quoted exact mode is unchanged, and
no other address is searchable (an admin UPN never receives platform mail and
would only widen the PII surface of the list).
The addresses live in PreviewWhitelist, not on the tenant config, so a new
GA/Reader-only GET /api/preview/notification-emails returns them as one map --
a single cross-partition scan instead of a point read per tenant. Both sides
join on the lowercased tenant id (address rows carry the JWT tid, a config
PartitionKey's casing is not guaranteed) and matching is case-insensitive,
because stored addresses keep the casing the user typed.
The map is best-effort in the portal: a failed read costs only the
search-by-address, never the tenant list. Addresses stay out of the list rows --
they are a search key, and remain visible in the tenant editor.
Match rules moved out of the component into tenantSearch.ts with unit pins, and
a catalog test pins that the plural route does not resolve to the per-tenant
entry one character away (which would demand a tenantId the route does not
carry, and hand a delegated caller a rescue path into the whole map).
Deploy: backend before web.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The timeline showed WiFi segments with an SSID and no signal, and an "Avg WiFi
signal" stat that simply vanished — on a location-gated device that reads as a
product defect rather than the Windows 24H2 gate that caused it.
No agent change was needed: buildSegments already merges every wifi_signal_info
into the WiFi segment covering its timestamp, so wifiDataLimitedReason rides in
with the sample that was already being read.
- NetSegment.dataLimitedReason, filled from the sample.
- Segments that never got a sample of their own (a mid-session reconnect emits
no wifi_signal_info) inherit it: the gate is a device-level setting and cannot
flip during an enrollment. A segment WITH a real reading is never overwritten
— pinned by a test.
- Tooltip: "Signal: unavailable — Location services off on this device" where
the percentage would be.
- Stats row: "Avg WiFi signal: n/a (Location services off)" instead of dropping
the row.
network_state_change is deliberately left alone. That event has never carried
signalPercent or radioType — NetworkChangeDetector collects them into its
snapshot for change detection, but only before_/after_wifiSsid reaches the
payload — so there is no absent field there for a reason to explain, and the
SSID it does carry is unaffected by the gate. Adding it would ship a field
nothing reads.
Verified: web tsc + eslint (0 warnings) + vitest 893/893.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A missing WiFi signal reading is indistinguishable from a bug unless the payload
says why, and the device-level location setting is not something an admin would
think to check. Since 058248d9 the SSID survives the gate via the WinRT tier —
but signal, radio and channel silently vanish with no explanation anywhere.
When the WinRT tier wins AND the native tier reported rc=5, wifi_signal_info now
carries wifiDataLimitedReason = "location_services_off" and the event message
gains "— signal unavailable, Location services off", so the reason reads straight
off the timeline. The portal's WiFi card matches that literal and names the
Intune setting that restores the full payload.
The claim is evidence-only: any other native failure (no WLAN service, no
connected interface) leaves the field null rather than blaming a privacy setting
we did not observe. IsLocationGateDenied is the single predicate, pinned at its
boundaries (rc=5 yes; rc=50, rc=5023, rc=1062 no), and the literal is pinned as
the published agent/portal/MCP contract.
New wifi_signal_info group in the MCP DEVICE_PROPERTIES_CATALOG, so a fleet can
be sized before anyone changes a policy:
search_sessions(deviceProperties: {
"wifi_signal_info.wifiDataLimitedReason": "location_services_off" })
Backend is untouched — the event payload is opaque DataJson with no projection.
network_state_change and the network timeline deliberately do not carry the
reason yet; that is a second payload plus web change for no extra insight.
Verified: build 0 warnings, agent suite 2553/2553, web tsc + eslint (0 warnings)
+ vitest 889/889, MCP tsc.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
wifi_signal_info was missing on most Windows 11 24H2+ WiFi enrollments
(build 22631 3/3, 26100 37/178, 26200 43/95 over n=276 sessions since 08-01).
Not a parser or language problem: every event that exists carries a full SSID,
so the failure is binary at the reader level.
Since 24H2 Windows gates WlanQueryInterface with
wlan_intf_opcode_current_connection — the only opcode we use — behind
precise-location consent and returns ERROR_ACCESS_DENIED. The consent prompt
only fires for a process in the user's context outside System32, so the agent
(SYSTEM, session 0, before the OOBE privacy page) is denied silently, and it
resolves consent from the HKLM ConsentStore because the S-1-5-18 hive has none
— while the interactive user on the same machine reads the SSID fine via the
per-user NonPackaged value. That is why it tracks the image's location setting,
not hardware, driver or language.
netsh wlan hangs off the same gate, so the 2026-07 netsh fallback and its
multi-language labels never covered the case they were built for; more labels
cannot fix it.
- New WinRtWifiSsidReader: Microsoft's documented replacement
WlanConnectionProfileDetails.GetConnectedSsid (ungated, SSID only), bound via
the CLR WinRT projection — no winmd, no NuGet, no csproj change — the same
mechanism OobeStateReader already uses from the SYSTEM context.
- New WifiInfoProvider owns the tier order (native -> WinRT -> netsh) that both
collectors had duplicated.
- The step diagnostics added in 2026-07 were logged at Debug while the default
level is Info, so they never reached a field log. The all-tiers-failed case is
now a Warning that decodes rc=5 into the location-gate explanation.
Signal, PHY and channel have no ungated source and stay null on tier 2;
deriving a percentage from GetSignalBars would fabricate precision.
Verified: build 0 warnings, agent suite 2542/2542, interop struct sizes measured
live (532/604), and the full WinRT chain resolves and returns the SSID under
net48.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The Intune roots the chain is pinned to are shared by every Intune tenant, so
a valid certificate only ever proved "issued by Intune to someone". Tenant
scoping rested on the device serial, which is printed on the chassis. A
Mismatch now returns 403.
Switched on against measured data, not a hunch: 35,684 requests across 32
tenants since the shadow telemetry landed, every one a Match, with the
Warning channel independently verified to be carrying other traffic so the
zero could not be a telemetry artefact.
Only Mismatch blocks, and the rule lives in one function so "what rejects a
request" has a single answer. ExtensionMissing, Unparseable and
RequestTenantNotAGuid mean "cannot tell" and are tolerated: the sample only
covers devices active in the window, so an older certificate or a
sovereign-cloud CA could still lack the extension, and rejecting on absence
would lock those devices out for something outside their control.
ExtensionMissing is the candidate for later tightening and has its own test
pinning the tolerance, so removing it must be a decision.
Evaluation fails open on its own exception — a defect on our side is not
evidence of a cross-tenant certificate. The 403 body does not echo which
tenant the certificate belongs to; that pair goes to the rejection log.
Device binding (stage 3) is untouched: still shadow, still Global-Admin-only.
Backend 4638/4638, 0 warnings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
IME never writes its "Completed user session" line when the user has no
assigned Win32 apps - its zero-app branch returns before that statement
(ApplicationPoller.cs:713-721, identical in 1.80/1.83/1.97/1.104). So
ImeUserSessionCompletedUtc stayed null, every arm of
ShouldTransitionToAwaitingHello was unsatisfiable, and the 30-min
advisory_completion backstop resolved healthy enrollments as
esp_exit_without_completion_evidence. One tenant: 10 of 30 sessions in a week,
all false positives - DAD-validated desktop, Hello provisioned, RealmJoin still
installing. Every Succeeded session there carries ime_user_session_completed;
not one of the failed ones does.
IME-USER-SESSION-ZERO-APPS reads the line IME does write there and routes it
through the same OnUserSessionCompleted callback. That is IME's own verdict
rather than a weakened gate: the zero-app branch locks the ESP in with an empty
application list, and the sibling emit site returns ProvisioningComplete right
after logging it. Guarded to the AccountSetup phase so it cannot burn the
adapter fire-once flag on a pre-sign-in timestamp, and replayed on the phase
transition when the observation predates the phase marker. AreUserEspAppsSettled
accepts an empty app list only with that explicit observation, never on
emptiness alone.
Second, independent defect: advisory_completion (30 min) overran the RealmJoin
completion gate, which deliberately holds the session and carries its own
bounded resolution (60 min from detection, activity-extended, 4 h cap). One
session installed 25 RealmJoin packages inside the window, the last 2 min before
the failure, while completion_waiting still read "waiting on:
realmjoin_resolution". The handler now re-arms while that gate is closed and its
own deadline is still armed; convergence comes from the gate itself, which
always ends with an Outcome set.
ime_user_session_completed gains an evidence field (zero_user_apps_enumerated /
user_session_completed) - no new event type, so the Constants ->
resource-catalog -> shared-manifests triple stays untouched. The pattern ships
via the config API and reaches existing agents, where an unknown action is a
single Debug line; the behaviour needs the agent release.
Build 0 warnings. DecisionCore 558/558, V2.Core 2530/2530, Backend 4634/4634,
MCP event-types-drift 6/6.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Same gate the cert-device-binding shadow got in 35a3ed0c, applied to its
sibling. Measured on the live enrollment: 263 identical shadow lines for one
device off a handful of Graph calls, because the cache answered nearly every
request and the log sat outside it.
DeviceAssociationResult.AsCacheHit() copies rather than marking the shared
cached instance, so the first real lookup is never mistaken for a cache hit
and dropped. Transient outcomes are not cached and keep logging every time.
Backend 4633/4633, 0 warnings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Measured on the first live enrollment: 136 agent requests produced exactly
ONE Graph call, because the 30-minute positive cache absorbed the rest. So
the check is not a throttling risk (the per-request Autopilot serial
validator made 25 calls in the same window) and the positive TTL needs no
change — raising it would only delay noticing a wiped or removed device.
What the 136 requests did cost was 136 log lines all saying the same thing.
Gate the shadow log on ServedFromCache so it emits one line per real lookup.
Cached repeats carry no new information: the reported age just counts up
mechanically from the same enrolledDateTime. Outcomes that are never cached
(Transient, NoDeviceIdInCert) keep logging every time, which is what an
anomaly warrants.
AsCacheHit() copies rather than marking the shared cached instance, so the
first real lookup is never mistaken for a cache hit and dropped.
Backend 4631/4631, 0 warnings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Tenant binding (stage 1) proves the client certificate was issued to this
tenant. It does not prove the certificate belongs to a device the tenant
still has: a cert lifted from a decommissioned machine keeps working.
IntuneDeviceBindingValidator resolves the Intune managedDevice id from the
certificate's Subject CN against the tenant's own managedDevices inventory.
Point-GET on managedDevices/{id} rather than an OData filter, so there is no
filter literal to inject into and a 404 is unambiguous. Cache/retry/transient
contract mirrors CloudPcDeviceValidator.
Shadow only, and visible only to Global Admins (same gate as the DevPrep
association preview) because the open question is a race, not an attack: a
device object can appear after the agent's first call. Every result carries
enrolledDateTime and the log line records enrolledAgeSeconds, so a device
created seconds before the request is distinguishable from a foreign cert.
Grep marker: CERT-DEVICE-BINDING-SHADOW.
The lookup is fire-and-forget like the DevPrep shadow so a cold Graph
round-trip never sits in the agent request path. That rules out stage 1's
request-row dimension (the row is written before the task finishes), hence
the Warning log; widening beyond preview should move to inline + dimension.
Needs DeviceManagementManagedDevices.Read.All, granted per tenant via the
customer script as feature IntuneDeviceBinding. The script's catalog,
ValidateSet and help block stay pinned to GraphFeatureCatalog by
GraphFeatureCatalogSyncTests (extended with the help-block case).
Build 0 warnings, backend 4629/4629, web 874/874, tsc clean, eslint 0.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Post-deploy verification of 249e39bc found zero AgentCertTenantBinding rows
across 32k agent requests. Cause: the Match outcome was emitted with
LogInformation, and worker-side ILogger below Warning never reaches App
Insights (provider default rule is Warning+, host forwarding of worker logs
is off). The bulk outcome was therefore invisible, which is indistinguishable
from the code never running — the shadow telemetry had no denominator.
Stamp every outcome onto the request row instead (FunctionContext.Items ->
RequestTelemetryMiddleware -> CertTenantBinding dimension). That row already
exists per request and is unsampled, so the denominator costs no extra
telemetry. Non-Match outcomes keep their Warning trace with full context.
FromCache existed only to sample the dead Match line and is removed with it.
Backend 4606/4606, 0 warnings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A chain-valid Intune MDM certificate only proves "issued to some tenant" —
the pinned roots are shared by every Intune tenant. Tenant scoping rested
entirely on the device serial in the downstream validators, which is not a
secret. Bind the tenant stamped into the auth cert to the requested tenant.
The Entra tenant id sits in OID 1.2.840.113556.5.14 of the cert the agent
already presents for mTLS, so this needs no Graph call, no consent and no
agent release. Not 5.6 (Intune Account id, a different GUID) and not 5.4
(device id, stored as 16 bare bytes) — the decoder handles both encodings
and now lives once in Shared, used by agent and backend.
Stage 1 observes only: ObserveCertTenantBinding returns void and swallows
its own exceptions, so it cannot fail an otherwise valid request. Match is
logged only on cert-cache miss, keeping the denominator without per-request
volume. Grep marker for stage 2: CERT-TENANT-BINDING-SHADOW.
Backend 4604/4604, Agent V2.Core 2519/2519, 0 warnings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Live-verified after 0d5e2572 deploy: the worker filter removes every 404/412/409
and worker SignalR row, but the SignalR output-binding calls are emitted by the
host process (SDK rdddsc) and only reachable at ingestion.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
StartupTelemetryService emits BackendStartupMs (process start ->
ApplicationStarted) and BackendTableInitMs as App Insights custom
metrics with version/commit/tableInitFullPass/instance dimensions;
TableStorageService exposes LastInitialization. MCP server writes one
{"type":"boot","readyMs"} stderr line per start next to the
tool_call lines so cold-start time is queryable as a trend.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Cold start point-reads a SHA-256 over TableNames.All stored in
AdminConfiguration/SchemaSentinel/tables instead of issuing 66
CreateTableIfNotExists calls. Missing/stale sentinel runs the full
idempotent pass once and rewrites it. SessionsIndex startup backfill
only after a full pass, behind a conditional-insert claim (one instance
under scale-out); IsSessionIndexEmptyAsync no longer treats errors as
empty. Daily maintenance runs IStorageInitializer.EnsureAllAsync to
repair out-of-band table deletions.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Drop per-row window7/baseline28.sessions (duplicated trend denominators), make
reEnrollRatePct/lift always present with null = withheld, add minSharePct/top
tail trimming that never drops override-carrying rows and reports what was
omitted. Backend wire shape and admin page untouched.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
First production pass alerted on agent:whiteglove_pending (two tenants in a
WhiteGlove rollout week) and agent:complete_soft (a Continue-Anyway tenant) —
customer workflow mix, not classifier drift. agent:* and register:* are now
ineligible for share_regression (still in the matrix and the silence group);
episodes opened by the broader gate re-arm on the next pass.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The cross-tenant StartedAt-only date-range query is a full-table drain in
Table Storage; time attribution, device journeys, verdict calibration and the
calibration radar's tenant discovery each ran their own — four identical reads
per 2h tick. RunAllAsync / RunManualAsync now load the window once through
GetMaintenanceWindowSessionsAsync (MaintenanceSweepSessionProjection: the union
of the sweeps' columns, drops FailureSnapshotJson/geo/OS/diagnostics) and the
sweeps slice it by StartedAt. MaintenanceSweepProjectionEquivalenceTests pins
that every consumed field survives the projection.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Kiosk tenant audit 2026-08-23: 836 of ~970 self-deploying sessions in one week
were parked AwaitingUser ("Account Setup 0/5") and graduated to Incomplete 51h
later although the devices were finished — the profile has no user phase, so the
classifier's rule 5 was asking for evidence that can never arrive.
- EnrollmentTimeoutClassifier: new rule 1c IsSelfDeployingProvisioned (profile flag +
Device Setup all-succeeded + no explicit failure) => Succeeded reconcile with an
honest reason; isSelfDeployingProfile passed by every caller (sweep stage 1+2,
max-lifetime verdict, late-telemetry heal, legacy retro mode).
- MaintenanceService stage 1: TryReconcileSelfDeployingAsync gate before the Stalled
marker (mirrors the WhiteGlove Part-2 gate), audit counter SessionsSelfDeployingReconciled.
- LegacyReclassificationService: new admin mode self_deploying_silent (heal-only,
dry-run by default) + GetSelfDeployingSilentSessionsAsync for the existing backlog.
- Agent SessionRegistrationHelper: wait up to 15s for a network link and retry 6x
(~62s) instead of 5x (~30s) so the BootTrigger relaunch on Wi-Fi no longer exits 7
before the link is back (the mechanism that left these sessions silent).
- Tests: 6 classifier cases (gate, within/past grace, user-driven guard, failure,
pre-Device-Setup), 2 registration tests; docs/backend/silent-session-classification.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The diagnostics package's built-in collection is now ONE catalog in Shared
(DiagnosticsBuiltInSections.All): the agent iterates it when building the ZIP and
the backend serves the same list to the portal (GET /api/diagnostics/paths,
MemberRead), so what administrators see is exactly what the agent collects.
Agent
- New conditional sections: RealmJoin client/package/Chocolatey/per-user logs
behind the tenant's RealmJoin Watcher toggle (mirrored onto
AgentConfiguration.EnableRealmJoinWatcher by RemoteConfigMerger) and the Device
Preparation bootstrapper event log behind the deterministic WDP marker (probe
once per build, fail toward Classic). ZIP layout mirrors the disk
(RealmJoinLogs/Windows|Choco|User). Every skip is a package-manifest line.
- Built-ins bypass DiagnosticsPathGuards by design (reviewed code); caps,
reparse-point skip and evtx export still apply. No ConfigVersion bump.
Backend
- GET diagnostics/paths (MemberRead, JWT-scoped) with the catalog + global paths.
- MergeDiagnosticsLogPaths: global ∪ tenant dedup (trimmed, case-insensitive) —
duplicates used to produce duplicate ZIP entry names.
Web
- Collapsed read-only built-in list (RealmJoin on/off in the tenant header,
neutral in the Global-Admin view), one-line DiagnosticsPathRow for every entry,
add-row above the lists; tenant context no longer fetches /api/global/config.
Tests: agent RealmJoin on/off, no user session, bootstrapper evtx, probe failure,
merger mirror; backend catalog invariants, payload shape, dedup, policy; web
builtInSectionDisplay. Docs: docs/agent/diagnostics-package.md (+index/log).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- EmailService + IEmailService: Mandrill messages/send via typed HttpClient with the
Notification resilience policy; provider confined to one transport method and the
Email:* settings (ApiKey, Endpoint, FromAddress, FromName). Resend NuGet dropped.
- open/click tracking explicitly off; sent/queued/scheduled = ok, rejected/invalid = warn
- callers (TenantApprovalService, PreviewWhitelistFunction) depend on IEmailService
- EmailServiceTests pin wire format, result semantics and fail-soft contract
- privacy page + OKF welcome-mail doc updated for the new sub-processor
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Retention was the only enforcement point that destroyed state on a
Pro -> Community downgrade: the 12-hourly sweep clamps to the Community
cap at read time and would immediately start hard-deleting the
90-365-day band (trial expiry identical, silently).
New policy: for 30 days after losing Pro
(FeatureEntitlementCatalog.RetentionDowngradeGraceDays) the Pro cap
keeps applying. Anchor model: ProDowngradedUtc (backend-only field,
patch-denied + revert-protected) stamped/cleared by the plan endpoint's
new pure ApplyPlanChanges core on EFFECTIVE-edition transitions (covers
explicitly ended trials; a planTier downgrade under an active trial
deliberately does not stamp); trial expiry anchors read-time via
TrialExpiresUtc. days<=0 (infinite) stays untouched.
Ops visibility: TenantPlanDowngraded (PATCH handler, new OpsEventService
dep) plus TenantRetentionGraceExpiring/Ended from the daily
TrialExpirySweep with the same stateless window mechanics, emitted only
when stored retention exceeds the Community cap; all dual-registered in
the web OPS_EVENT_TYPES catalog. Fanout now uses its _utcNow seam
instead of inline DateTime.UtcNow. OKF doc
backend/plan-downgrade-retention-grace.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Two enrollment blind spots become timeline ground truth from the System event
log via one EventLogWatcher (WindowsUpdateTracker pattern, 24h backfill with
RecordId watermark recovering pre-agent records):
- system_clock_changed (Kernel-General 1): oldTime/newTime/signed timeDeltaMs,
reason and the setting process. 2s floor suppresses w32time 1ms micro-slews;
steps >= 5min are Warning + immediate upload. Payload instants are the
authoritative source (event timestamps can be clamped server-side).
- system_sleep_episode (Power-Troubleshooter 1 classic sleep/hibernate,
Kernel-Power 507 Modern Standby; 506 deliberately unconsumed): kind,
enteredAt/exitedAt, durationSeconds, wake source / AC state. 60s real-sleep
floor filters Modern Standby screen-off scenarios.
ConfigVersion 39 (Collectors.EnableSystemTimelineWatcher +
SystemEventBackfillLookbackMinutes). Both types are non-activity on agent and
backend (idle/stall clocks unaffected; a sleeping device stays Stalled).
Consumers: TimeJumpBadge gains the ground-truth cause "clock-set"
(classifyTimeJump matches backward display steps against recorded clock sets);
EventTimeline badge blocks for both events plus the previously bare
power_state_change; SessionInfoCard keeps the wall-clock duration and adds a
standby note; TimeAttributionCalculator builds SleepSpans (RebootSpan clone,
AttributionVersion 3) persisted as SleepSeconds/SleepSpansJson and rendered in
TimeAttributionLane; ANALYZE-DEV-012 (info, single) fires once per session for
episodes >= 5min - deliberately the only new rule, clock findings stay with
DEV-008 to avoid duplicate-finding flood.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Event-driven AC/battery observation during enrollment (no polling): a WMI
Win32_PowerManagementEvent (EventCode 10) push subscription re-probes
GetSystemPowerStatus and diffs snapshots through a pure tracker into
power_state_change events - transition ac_to_battery (Warning, immediate) /
battery_to_ac (Info) / threshold_crossed at 50/30/15% (per-level lifetime
latch, lowest-crossed-only on jumps, arm-time baseline covers sessions
starting low, 5s trailing-edge debounce, emission cap 20). Never armed on
devices without a battery; arm failure surfaces as collector_degraded.
Kill-switch Collectors.EnablePowerStateWatcher (ConfigVersion 38).
power_state_change is classified non-activity on both sides
(SignalActivityClassifier + IsPeriodicOrStallEvent) so battery drain can
neither keep idle collectors alive nor heal a Stalled session.
New analyze rules, both with on_event:power_state_change interim triggers
and deliberately single-required-condition (event_data conditions scan
events independently - no same-instance join):
- ANALYZE-DEV-009 (high): thresholdPercent equals 15
- ANALYZE-DEV-010 (warning): transition equals ac_to_battery
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The JSON editors serialize the FORM object, but what users paste is usually a
rule EXPORT (e.g. received from another tenant). The create/edit whitelists
rebuilt collector parameters and evaluateOn from form fields the export does
not carry, so a pasted gather rule silently lost every collector parameter and
a pasted analyze rule silently reverted to the enrollment-end default.
Both rules pages get a single shape-tolerant mapper in types.ts:
- gatherRuleToForm unflattens the nested parameters object (authoritative when
present, so edit-merge leftovers cannot leak), maps nullable rule fields to
form defaults, imports a missing emitMode as 'always' (the rule's actual
behavior) instead of the empty-form on_change default, and now also backs
startEditing so edit and paste share one mapping.
- analyze jsonToForm maps evaluateOn onto the eval* checkboxes (an explicit
evaluateOn wins over stale form flags in edit-mode merges); terminal-only
exports fall back to the enrollment-end default.
- tags and the folded effective markSessionAsFailed now survive the import:
both forms carry tags into the create/save payloads, analyze creates carry
markSessionAsFailedDefault. notify/notifyChannelIds stay excluded — channel
ids are tenant-specific.
9 new vitest cases pin both shapes, the merge precedence, and the round-trips;
full web suite 824/824, tsc and eslint clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Custom rules are tenant-partitioned and functionally collision-free, but three
surfaces still keyed on the bare non-unique ruleId string:
- RuleStats global aggregate (global_{ruleId}) summed same-ID custom rules of
unrelated tenants (title/severity last-writer-wins). The global row is now
catalog-only: analyze gates on IsBuiltIn/IsCommunity, gather gates on the
reserved-namespace pattern (agent events carry no flag; custom rules can
never occupy the reserved pattern).
- The 'never ship a built-in in the CUSTOM namespace' commitment from
RuleIdPolicy was documented but unenforced: combine.js now fails on
duplicate or non-reserved built-in IDs, BuiltInRuleCatalogPolicyTests pins
the same invariants on the embedded catalog, and the GitHub reseed rejects
non-reserved IDs before writing to the global partition.
- DeleteRuleStatesForRuleIdAcrossTenantsAsync (cross-partition delete by bare
RowKey) now refuses IDs outside the reserved namespace with failed=-1 so
callers abort the follow-up global catalog delete.
Verified: prod global partitions (45 analyze + 11 gather) are fully inside the
reserved namespace, so the guards touch no existing data. New OKF doc
docs/rules/rule-id-namespace.md captures the identity/collision model.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The IME processes the ESP app list in multiple passes (device-ESP evaluation
ending Skipped, real install up to an hour later), and AppInstallSummary
folded first observation -> last terminal across them: a 23-second app late
in the queue reported 4002 s (session 44862cd3, "Set TimeZone").
Backend ingest: new max-folded LastAttemptStartedAt anchors DurationSeconds
(CompletedAt - last attempt start; legacy rows without the anchor keep the
span fallback), replay-guarded additive InstallPassCount, attempt-scoped
DownloadDurationSeconds pairing, and a weaker-terminal guard (completed with
state Skipped/Postponed never overrides Installed/Error, in-batch and in the
cross-batch reconcile). StartedAt stays the earliest-wins window/version-
ordering key. AppsDashboardProjection carries the new columns.
AppVersionRegressionRadar: cutover gate — only attempt-anchored rows enter
the duration population on BOTH comparison sides, so mixed-semantics medians
can neither mask real regressions nor falsely re-arm active episodes.
Time attribution: per-pass segment pairing replaces the first-start ->
last-terminal hull. An app's seconds = sum of its ACTIVE segments (failed
attempts and evaluation passes count; inter-pass idle gaps don't), occupancy
merges the segments, hull endpoints remain for display and what-if bounds.
Agent: a terminal->active transition re-arms BOTH timing endpoints, so event
payload durationSeconds also describes the attempt.
Web/PDF/MCP: labels and tooltips say "install time (final attempt)", the
apps sessions table gets a xN multi-pass chip, the time-series chart carries
a cutover footnote, MCP tool descriptions document the semantics split
between get_app_install_metrics and get_time_attribution.
No backfill: pre-cutover rows keep span values (documented in the public
changelog). OKF doc: docs/backend/app-install-duration-attempt.md.
Suites: Functions 4383, Agent 2407, MCP 564, Web 814 - all green, build 0/0.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The 60-min RealmJoinTimeout deadline arms at RJ detection (the RJ agent MSI
install during DeviceSetup) and used to cut off monitoring mid-install: report
55e6afd61c9d (session 46a96078) lost the tail of a large package catalog whose
last observed package completed 3 seconds before the deadline, with the first
deployment only starting 16 minutes into the window.
When the deadline now fires with LastDeploymentPhase 100/101 and deployment
activity (phase change or package observation, persisted restart-safe in
RealmJoinFacts.LastActivityUtc; the detection-time phase capture deliberately
does not count) inside the last 60 min, the handler re-arms to
lastActivity + 60 min instead of timing out — Info event
realmjoin_timeout_extended — clamped at an absolute cap of detection + 4 h.
realmjoin_timeout carries a reason payload (hard_timeout / inactivity /
absolute_cap); a fire of a deadline incarnation superseded by a re-arm
dead-ends via the OccurredAtUtc == DueAtUtc scheduler contract. The idle case
(no activity ever) still times out at 60 min, and phase-200/210 activity never
extends. Packages are only registry-visible at completion, so the inactivity
window keeps the full original 60 min.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Agent stamps X-Send-Time-Utc (device clock, ISO-8601 round-trip) per upload
ATTEMPT; ingest parses it (year>=2000 guard, deliberately no upper clamp) and
server-stamps SentAt onto every event of the request. SentAt - OccurredUtc is
pure spool delay, ReceivedAt - SentAt is network + device-vs-server clock
offset - previously indistinguishable and only separable via median statistics.
clock_skew condition: batches carrying SentAt measure the frame directly
(spool-immune by construction - no spread cap, IME/clamped exclusions
irrelevant, IME-only sessions become measurable; evidence sentAtBatchCount);
legacy batches keep the per-event median path unchanged. CmTraceSkewTripwire
deliberately untouched: its differential median math cancels clock offset as
common mode.
Full persistence chain: Store x2 + Map, fields= projection (sentAt), MCP
get_session_events field list + rule-authoring-guide. New OKF doc
backend/send-time-frame-separation.md.
Suites: Functions 4370 (+16), Agent 2407 (+1), MCP vitest 564 + tsc 0.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Oliver Kieselbach