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PASSEDserver / print_server_spooler_crash
Print Server Spooler Crash — Enterprise-Wide Print Failure
The Windows Print Spooler service crashes on the central print server after processing a corrupted print job from an updated driver. All 45 network printers become inaccessible. 400 users across 3 floors cannot print.
Pattern
PRINTER_EVENT
Severity
CRITICAL
Confidence
85%
Remediation
Auto-Heal
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | PRINTER_EVENT | PRINTER_EVENT | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 7 linked | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Auto-Heal — Corax resolves autonomously |
Scenario Conditions
Windows Server 2022 print server. 45 shared printers (HP/Ricoh/Canon). Print Spooler service crashed. 1,200 queued print jobs lost. Driver isolation not configured. Spooler crash loop on restart.
Injected Error Messages (1)
Print Spooler service crashed on PRINT-01 — Event ID 7031: Windows Print Spooler terminated unexpectedly, faulting module: UNIDRV.DLL, 1,200 queued jobs lost, 45 shared printers offline, service restart failing with error 1067: process terminated unexpectedly, driver isolation not enabled
Neural Engine Root Cause Analysis
The Windows Print Spooler service has crashed due to a fault in the UNIDRV.DLL driver module, which is a universal printer driver component. This indicates a driver compatibility issue or corrupted driver file causing the service to terminate unexpectedly. The failure to restart (error 1067) and lack of driver isolation means the problematic driver is taking down the entire print spooler service, affecting all 45 shared printers and causing 1,200 queued jobs to be lost.
Remediation Plan
1. Stop any remaining print spooler processes, 2. Clear the print spooler directory of corrupted job files, 3. Enable driver isolation to prevent future crashes, 4. Restart the Print Spooler service, 5. If restart fails, reinstall or update the problematic UNIDRV.DLL driver, 6. Test printing functionality with a sample job, 7. Monitor service stability for 15 minutes
Tested: 2026-03-30Monitors: 1 | Incidents: 1Test ID: cmncjkn6o0284obqeciqixsad