
Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

If you see a message that your Chrome profile failed to authenticate—often when trying to sync or...

If you see "permission denied" or "504 gateway timeout" errors while syncing OneDrive, the issue ...

If you see a 504 Gateway Timeout error in Outlook (often when connecting to Exchange Online or a ...

When you run Invoke-WebRequest in PowerShell and get a 404 Not Found

You try to open your Outlook data file (PST) and get an error that it's locked or cannot be acces...