Fix 'File Locked' or 'Permission Denied' During Windows Update
You try to install a Windows update, but it fails with a message like "File locked" or <...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Microsoft Store Authentication Failed Due to App Permissions
You try to sign in to the Microsoft Store and see "Authentication failed" or "Something went wron...
Fix Command Prompt Module Not Found After Update
After a Windows update, you might see a 'module not found' error when running commands in Command...
Fix Windows Security Not Launching at Startup
You restart your PC and notice Windows Security (formerly Windows Defender) isn't running. The ic...
Fix PowerShell 502 Bad Gateway in IIS: Step-by-Step
A 502 Bad Gateway error in IIS typically means a downstream server or application pool failed. Wh...
Remote Desktop Troubleshooting Checklist for Admins
When users can't connect to a remote desktop, the root cause is often something simple. This chec...
Issue queue
SitemapFix OneDrive Stuck on 'Processing Changes'
OneDrive Sync Broken After Windows Update: Fixes
How to Fix SSL Certificate Errors in Microsoft Teams
Resolve Windows Defender Authentication Failure from File Corruption
Fix Windows Defender Antivirus Slowing Down Your PC
ffmpeg Not Found After Homebrew Install? Fix It
Fix Windows Security App Stuck on Loading Screen in Windows 10
Set Up Windows Defender on Your Mac
Fix Windows Defender Auth Failed: Step-by-Step
How to Fix Chrome Profile Access Denied and Corruption Errors
Resolving BitLocker Rate Limit Error via Group Policy
OneDrive Folder Sync Problems Post-Migration – Solutions
OneDrive Sync Broken After Windows Update: Fixes
How to Fix SSL Certificate Errors in Microsoft Teams
Resolve Windows Defender Authentication Failure from File Corruption
Fix Windows Defender Antivirus Slowing Down Your PC
ffmpeg Not Found After Homebrew Install? Fix It
Fix Windows Security App Stuck on Loading Screen in Windows 10
Set Up Windows Defender on Your Mac
Fix Windows Defender Auth Failed: Step-by-Step
How to Fix Chrome Profile Access Denied and Corruption Errors
Resolving BitLocker Rate Limit Error via Group Policy
OneDrive Folder Sync Problems Post-Migration – Solutions