
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...

If you're having trouble downloading or updating apps from the Microsoft Store, a corrupted or mi...

You try to install an app from the Microsoft Store, but get a 'permission denied' error and you d...

You're running a command in Command Prompt and get hit with "Authentication failed" or "Access de...

When running npm install, you may see an error like EACCES: permission denied<...

When you try to reset Windows Search (often via Settings > Search > Searching Windows > Reset), y...