Fix Windows Security Not Starting Due to Third-Party Antivirus
If Windows Security (formerly Windows Defender) refuses to start or shows a blank screen, a third...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Activation Error: Too Many Attempts Rate Limit
You enter your Windows product key and get a message: "Error: Too many activation attempts. P...
Fix Microsoft Store Download Stuck at 0 Bytes
When you try to download an app or game from the Microsoft Store and the progress bar stays at 0 ...
Fix Windows Security Dependency Conflict Permission Denied
You may see a 'permission denied' error when Windows Security interacts with other security softw...
Fix OneDrive Sync Error 0x80070020: File Locked
OneDrive sync error 0x80070020 typically appears when a file is locked by another application (e....
OBS Black Screen Troubleshooting Checklist
You launch OBS Studio, start a scene, and the preview shows a black screen. This is one of the mo...
Issue queue
SitemapResolve Outlook 502 Bad Gateway in Outlook 2019
How to Install and Configure Chrome on Windows 11
Fix Missing Windows Security After Update
How to Reset Microsoft Store Cache on Windows 11
How to Fix BitLocker 'Command Not Found' or 'Permission Denied'
Troubleshoot BitLocker Recovery Key Failure
Microsoft Teams Performance Troubleshooting
How to Reactivate Windows After Changing Motherboard or CPU
Bitbucket SSH Key Setup: Fixing Publickey Permission Denied
How to Fix Windows Update Keeps Failing: A Practical Checklist
Fix Teams on Mac by Clearing Cache
How to Fix '7-Zip Cannot Open File as Archive' on Windows 10
How to Install and Configure Chrome on Windows 11
Fix Missing Windows Security After Update
How to Reset Microsoft Store Cache on Windows 11
How to Fix BitLocker 'Command Not Found' or 'Permission Denied'
Troubleshoot BitLocker Recovery Key Failure
Microsoft Teams Performance Troubleshooting
How to Reactivate Windows After Changing Motherboard or CPU
Bitbucket SSH Key Setup: Fixing Publickey Permission Denied
How to Fix Windows Update Keeps Failing: A Practical Checklist
Fix Teams on Mac by Clearing Cache
How to Fix '7-Zip Cannot Open File as Archive' on Windows 10