How to Fix 'Windows Defender Module Not Found' Error
If you see 'Windows Defender module not found' when trying to open Windows Security or run a scan...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Unlock a File in Use by Another Program in Windows
You try to delete, rename, or move a file in Windows and get an error: "The action can't be compl...
Fix Windows Security Version Mismatch Permission Denied
You might see a 'version mismatch' or 'permission denied' error when opening Windows Security, ru...
Fix Windows Activation Error 0x8007232b: Authentication Failed
You see "Windows activation authentication failed" with error code 0x8007232b. This usually means...
Fix Microsoft Store Error 0x80070424: Update Failed
When you see error 0x80070424 while trying to update an app in the Microsoft Store, it usually me...
How to Fix Windows Security Missing from Taskbar
If you notice the Windows Security shield icon is missing from your system tray, you're not alone...
Topic paths
Quick titles
Fix Windows Terminal Token Cache ErrorsFix Windows Terminal Certificate Error After UpdateFix Windows Update Permission Denied ErrorHow to Fix Windows Security Rate Limit ErrorFix Windows Update Stuck at 0%Stop PowerShell High Memory Caused by ModulesWindows Activation Error 504: Firewall Fix GuideFix Windows Search Sync Issues with OneDrive