Here is a complete list of common Microsoft Defender Antivirus error codes and how to fix them on Windows 11/10 computers.

Also, rrror codes with the numbers will blink the 2-digit codes on the display panel. In case your Samsung AC shows a code that's not in the list above, contact Samsung's authorised service centre ...

Citations World Wide Web Consortium (W3C) List of Server Response Codes How Does Google Respond to 500 Response Codes? Watch the discussion at the 13:48 minute mark ...

If your Windows 11/10 Upgrade has failed & if you have noted down the error code, then this post offers some basic solutions to troubleshoot & resolve the problem.