Fix Windows Security Network Error: Permission Denied
You see "Windows Security" followed by "Access is denied" or "Permission denied" when trying to o...
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View listFix Windows Search Connection Refused Due to Firewall
If Windows Search gives you a "connection refused" error, it usually means the firewall is blocki...
Fix Windows Security Version Mismatch Error
You open Windows Security and see an error like "Version mismatch" or "This app can't open becaus...
Fix PowerShell Token Expired Error 401
If you're seeing a 401 status code with a message like "token expired" in PowerShell, it usually ...
Fix OneDrive SSL Certificate Error After Update
After a recent Windows or Office update, you may see an SSL certificate error in OneDrive. The er...
Fix Windows Defender Service Not Running
If you see "Windows Defender service not running" or a red warning in Security Center, the underl...
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