Fix Windows Defender Not Opening Error 404
You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix ERR_CERT_AUTHORITY_INVALID in Chrome
When Chrome shows ERR_CERT_AUTHORITY_INVALID, it means the browser cannot verify...
Fix Windows Store Downloads Stuck After Update
After a Windows update, you might open the Microsoft Store to find your downloads or app updates ...
How to Add External Drives to Windows Search Index
If you've connected an external USB drive and Windows Search can't find files on it, the drive is...
BitLocker File Locked: Fix Group Policy Configuration
When a file is locked by BitLocker on a domain-joined Windows machine, the cause is often a group...
How to Fix Windows Defender Error 0x80070422
When you see error 0x80070422 while trying to start Windows Defender, it typically means the Wind...
Issue queue
SitemapFix Microsoft Teams Lag During Video Calls
How to Fix Windows Security Network Error on Startup
How to Fix Windows Security Not Loading
Resolve Chrome Error 0x80070005 on Windows
How to Fix Windows Search Proxy Permission Denied Error
Fix Store Apps Not Starting Automatically
Stop OneDrive Update Errors – No Reinstall Needed
Fix Microsoft Store Proxy Error: Cannot Connect
Fix Microsoft Store Apps Not Downloading or Updating
Chrome Offline Installer Guide for Shared Computers
Chrome Module Not Found Error: How to Fix
How to Enable and Read Chrome Debug Logs
How to Fix Windows Security Network Error on Startup
How to Fix Windows Security Not Loading
Resolve Chrome Error 0x80070005 on Windows
How to Fix Windows Search Proxy Permission Denied Error
Fix Store Apps Not Starting Automatically
Stop OneDrive Update Errors – No Reinstall Needed
Fix Microsoft Store Proxy Error: Cannot Connect
Fix Microsoft Store Apps Not Downloading or Updating
Chrome Offline Installer Guide for Shared Computers
Chrome Module Not Found Error: How to Fix
How to Enable and Read Chrome Debug Logs