Knowledge base for software setup, errors, and daily tool work.

Fix Chrome 'Profile Connection Refused' Error on Mac

If you see 'Profile connection refused' when opening Chrome on your Mac, the browser can't access...

Fix Windows Terminal 'File Locked by System' Error

When you try to open or edit a file in Windows Terminal and see "The file is locked by the system...

Fix Windows Defender Authentication Failed Error in Windows 10

You see a message like 'Windows Defender Authentication Failed' when trying to open or update Win...

Fix Windows Security Authentication Error 0x80070035

Fix Windows Defender File Locked During Scan

You run a Windows Defender scan and it reports that a file is locked and can't be scanned. This i...

Fix Error 0x80070422 Windows Security Version Mismatch

You may see error code 0x80070422 when opening Windows Security, often accompanied by a message a...