Fix 'Security Module Not Found' in Windows Defender
If you see a message in Windows Security that says something like "Security module not found" or ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listCommand Prompt Not Responding? Fix Black Screen Issue
You click on Command Prompt, but instead of a working terminal, you get a black screen that doesn...
Fixing BitLocker Invalid Configuration Errors
You try to enable BitLocker or see a drive status showing 'invalid configuration.' This usually m...
Fix Windows Activation Error: Port 443 Already Allocated
You try to activate Windows, but get an error: "Windows activation port already allocated on ...
Windows Terminal Service Unavailable Checklist
When you see 'Terminal Service is unavailable' or 'Remote Desktop Service is currently busy' on a...
How to Fix Windows Search Index High Memory Usage
If your system feels sluggish and Task Manager shows SearchIndexer.exe using 500 MB or more of RA...
Topic paths
Quick titles
Fix Windows Activation 502 Bad Gateway via Command PromptFix Nginx Config Test Failure After Adding SSL CertificateFix Maven Dependency Issues in Continuous IntegrationChrome Won't Start? Fix Corrupted ProfileResolve Error Code 0xc0000005 in ChromeFix DNS Server Not Responding for Windows UpdatePowerShell Access Denied Troubleshooting ChecklistTroubleshooting Error 0x80070643 in Windows Terminal Setup