
Windows Security Authentication Failed: Troubleshooting Checklist
When Windows throws an authentication failed error, it usually means the system couldn't verify y...
Software troubleshooting desk

When Windows throws an authentication failed error, it usually means the system couldn't verify y...

You see "Windows isn't activated" or "We can't activate Windows on this device" even though you h...

After a Windows Update, you might see a Windows Defender error related to DNS—often something lik...

If you see the error 'Windows Activation Module Not Found' when trying to activate Windows 10, th...

You change a setting in Chrome—like the default search engine, startup page, or download location...

If you notice high CPU usage from Task Scheduler (the process svchost.exe hosting th...