
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...

You click Windows Terminal, the icon bounces, and then nothing happens. Or it flashes and disappe...

You open Chrome on Windows 10 and notice some extensions aren't working—no icon, no functionality...

If you see 'proxy authentication failed' when using a specific Chrome profile, the browser can't ...

You might see the error 'Windows Defender service authentication failed' when trying to open Wind...

After performing a clean install of Windows, you may encounter a '404 Not Found' error when tryin...