
Fix Windows Defender Authentication Failed After Update
After a recent Windows update, you might see an error like "Authentication failed" when trying to...
Software troubleshooting desk

After a recent Windows update, you might see an error like "Authentication failed" when trying to...

If you see a proxy error in Windows Defender—often something like "Your IT administrator has limi...

When you run Get-MpComputerStatus or Start-MpScan and see "The ...

If you see error 0x80070422 when opening Windows Defender or running a scan, it usually means the...

When installing Google Chrome, error 0x80070005 usually appears as a pop-up saying “Installation ...

You see error 0x80070005 when trying to update Windows Defender. This usually means a permission ...