
Fix Windows Defender Connection Refused or Permission Denied Errors
If you see "connection refused" or "permission denied" when trying to start or update Windows Def...
Software troubleshooting desk

If you see "connection refused" or "permission denied" when trying to start or update Windows Def...

When you run a PowerShell command that requires authentication, you might see an error like

You open OneDrive and see a sync error: "Version mismatch." This usually happens when your local ...

When you see error code 0x80073cf9 while trying to install or update an app from the Windows Stor...

After a Windows update, you might find that scheduled tasks no longer run, or the Task Scheduler ...

If you see OneDrive stuck on 'Processing' when trying to download a file, the issue is usually a ...