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 listBitLocker Update Troubleshooting Checklist
After a Windows update, BitLocker may prompt for a recovery key, fail to unlock, or show error me...
Fix Remote Desktop Blank Screen After Login with No Cursor
You log into a remote machine via RDP, see the login screen, enter credentials, and then get a bl...
How to Fix Task Scheduler Blank Screen Without Reinstall
If you open Task Scheduler and see a blank white or gray screen—no tasks, no menus, just emptines...
Outlook Module Not Found: Troubleshooting Checklist
When you see 'Outlook module not found', it usually means a required component is missing, corrup...
Fix Command Prompt Crash on Startup with Error 0xc0000142
If Command Prompt crashes immediately on startup and displays error 0xc0000142, the application f...
Topic paths
Quick titles
Resolving Go Module Proxy Timeout ErrorsResolve Error 0x80246007 in Windows StoreFix PowerShell Connection Refused: Step-by-Step GuideFix Windows Security Token Expired After Password ChangeTroubleshoot High RAM Usage by Microsoft DefenderPowerShell Freezes on Launch: Troubleshooting GuideWindows 10 Remote Desktop High RAM FixBreak PowerShell Login Loop on Windows