
Fix Outlook Authentication Failed: App Password Not Working
If you're seeing an authentication failed error in Outlook and your app password...
Software troubleshooting desk

If you're seeing an authentication failed error in Outlook and your app password...

If you see error code 0x80131500 when trying to open the Microsoft Store or download an app, the ...

You open Windows Security and see that the antivirus is off, with no obvious way to turn it on. T...

You open Microsoft Store and see a message like 'Check your internet connection' or 'Try that aga...

You change a setting in Windows Terminal—font size, color scheme, or default profile—but after re...

If you see 'Permission denied' when trying to run Microsoft Outlook on Ubuntu (for example throug...