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

Check PowerShell Version Before Running Scripts

You wrote a PowerShell script or downloaded one from a repository. You run it, and it fails with ...

Fix systemd Service Restart Loop Due to Unit File Errors

You notice a service keeps restarting repeatedly, filling logs with start/stop messages. This oft...

How to Fix Microsoft Teams 404 Page Not Found Error

You click a link in Microsoft Teams and see a '404 Page Not Found' error. This usually means Team...

Windows Defender Connection Refused: Troubleshooting Checklist

You open Windows Security and see "Connection refused" or "Something went wrong. Try reopening Wi...

Java JDK Not Recognized After Installation: Fixes and Checks

Fix Windows Defender Token Expired Preventing Service Start

You see 'Token expired' in the Windows Defender event log or a notification that the service didn...