
How to Fix Outlook Proxy Authentication Failed Error
You try to send or receive email in Outlook and see an error: "Proxy authentication failed"
Software troubleshooting desk

You try to send or receive email in Outlook and see an error: "Proxy authentication failed"

You ran the Outlook settings reset command (e.g., outlook.exe /resetnavpane or

If you see error 0x8031004b when trying to unlock or enable BitLocker after a settings reset, it ...

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

You open Windows Security or try to run a scan, and instead of working, you get a 504 timeout err...

If you see "TLS Error: TLS handshake failed" in your OpenVPN client log, the connection cannot es...