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

How to Reinstall the Windows Security App (Microsoft Defender)

If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...

FFmpeg Audio Out of Sync: Practical Fixes

You encoded a video with FFmpeg and now the audio is ahead or behind by a fraction of a second. T...

Windows Search Connection Refused: Quick Troubleshooting Checklist

If Windows Search suddenly stops working and you see a 'connection refused' error when trying to ...

How to Fix 'File Locked by Another Process' Error in PowerShell

When you run a PowerShell command that reads, writes, or deletes a file, you might see an error l...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Microsoft Teams High Memory Usage on Mac M1

If you're running Microsoft Teams on an Apple M1 or M2 Mac and notice it using several gigabytes ...