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PASSEDserver / windows_wsus_sync_failure
Windows WSUS Sync Failure
The WSUS server fails to synchronize with Microsoft Update for 14 days due to a corrupt content database. All managed workstations and servers are missing critical security patches, creating a significant vulnerability window.
Pattern
UNKNOWN
Severity
CRITICAL
Confidence
85%
Remediation
Remote Hands
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | UNKNOWN | UNKNOWN | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 5 linked | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Remote Hands — Corax contacts on-site support via call, email, or API |
Scenario Conditions
WSUS 10.0 on Windows Server 2022. SUSDB database corruption after unexpected shutdown. Last successful sync 14 days ago. 300 managed endpoints missing patches. 12 critical CVEs unpatched across the fleet.
Injected Error Messages (1)
WSUS server wsus01 synchronization failure — last successful sync 14 days ago, SUSDB database corruption preventing catalog download, error 0x80131509 during content sync, 300 managed endpoints missing critical security patches including 12 high-severity CVEs, WSUS administration console showing sync error state
Neural Engine Root Cause Analysis
The WSUS server wsus01 is experiencing a critical database corruption issue in the SUSDB database that has prevented synchronization for 14 days. The corruption is causing error 0x80131509 during content sync operations and blocking catalog downloads from Microsoft Update. This database-level failure has cascaded into service unavailability and is preventing 300 managed endpoints from receiving critical security patches, creating a significant security exposure with 12 high-severity CVEs remaining unpatched.
Remediation Plan
1. Immediately stop WSUS services to prevent further corruption 2. Backup current SUSDB database state for forensics 3. Run WSUS database integrity checks and attempt repair using wsusutil.exe reset or SQL DBCC commands 4. If repair fails, restore from last known good backup or rebuild WSUS database from scratch 5. Reconfigure synchronization settings and perform full sync 6. Validate service restoration and deploy critical patches to affected endpoints 7. Implement monitoring for database health and sync status
Tested: 2026-03-30Monitors: 1 | Incidents: 1Test ID: cmncjycnx05qaobqe7uxjowsf