
Windows Defender Authentication Failed: Step-by-Step Checklist
You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...

You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...

You might see an error like 'Windows Defender cannot check for definitions because of an SSL cert...

You search for a file in Windows and get a "502 Bad Gateway" error. This usually means Windows Se...

If you need Windows Search to index files on a network share or web-based content through a proxy...

After a Windows update, you might see a network error in Microsoft Store that prevents downloadin...

You install a Chrome extension, try to use it, and see "Access Denied." The extension might be di...