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

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

You try to open Windows Defender Security Center or run a scan, but get an 'Access Denied' error....

If Chrome on Ubuntu starts crashing, showing blank pages, or refusing to open with a message like...

You click the Microsoft Store icon, but nothing happens—or it opens briefly and crashes. Maybe yo...

You search for a file by name in the Windows search box, but nothing shows up—even though you kno...

If you see DNS-related errors in Task Scheduler—like 0x80072EE2 or 0x80072EFD<...