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 listHow to Reset BitLocker Settings Without Recovery Key
If you've lost your BitLocker recovery key and need to reset the settings to regain access to you...
How to Fix Windows Update Service Not Running
If Windows Update won't start or you see an error that the update service is not running, it's us...
Fix Windows Update Error 0x8024402c: Configuration Issues
When you see Windows Update error 0x8024402c, it usually means the update service can't connect t...
Fix Azure CLI Token Expired Error in CMD
When running Azure CLI commands in Windows Command Prompt, you may encounter a 'token expired' er...
How to Fix Windows Defender Not Opening
When you click Windows Defender and nothing happens, or it opens and immediately closes, it's oft...
Topic paths
Quick titles
How to Enable BitLocker When Service Is UnavailableResolve OneDrive Sync Error 0x8007016aFix CMD Showing Wrong Memory UsageCloudflare Full Strict SSL Not Working: Fixes and ChecksTroubleshooting Microsoft Store 0x80073cf0 and CPU SpikesHow to Resolve Error 0x800f081f in Windows 10Fix Windows Defender Not StartingFix Windows Activation File Locked Permission Denied