How to Enable Windows Defender After It Failed to Start
If Windows Defender won't start, you may see an error like "This app has been turned off" or "Win...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Remote Desktop Permission Denied Error
You try to connect to a remote PC via Remote Desktop (RDP) and get a "permission denied" or "acce...
Fix 502 Bad Gateway in Remote Desktop Connection
When you see a 502 Bad Gateway error while trying to connect via Remote Desktop,...
Fixing SSL Certificate Errors in Windows 10 Edge Browser
When you see an SSL certificate error in Microsoft Edge on Windows 10, the browser blocks the pag...
Fix Windows Security Settings Not Loading or Resetting
Windows Security (formerly Windows Defender Security Center) may fail to load or reset properly d...
BitLocker 504 Gateway Timeout: Causes and Fixes
If you manage BitLocker-encrypted devices and see a 504 gateway timeout when attempting to unlock...
Topic paths
Quick titles
Microsoft Teams File Locked After Upload FixRe-enable Windows Defender After FailureChrome High CPU Usage: Windows 10 Fix GuidePowerShell Memory Usage Stays High After ClosingChrome Browser Path Not Found After Update: Fix GuideHow to Resolve Remote Desktop Protocol Version ConflictsFix Windows Defender Access Denied Registry ErrorFix Slow Chrome by Clearing Browser Cache