
Windows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...
Software troubleshooting desk

If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...

You see a message that the Windows activation module is missing or not found, often when trying t...

If you run a scheduled task and see a 504 Gateway Timeout error, the task is lik...

You try to update Windows Defender, but it fails with error 0x80240022. This usually means Window...

After a Windows update, you might find that BitLocker Drive Encryption is no longer available or ...

When you try to connect to a remote PC and see "Windows Security" followed by "Authentication fai...