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

FFmpeg Audio Delay Correction: Sync Audio and Video

If you've ever played a video where the audio lags behind or leads the picture, you're dealing wi...

Fix Windows Defender Token Expired Group Policy Error

You may see a Windows Defender error like 'Token expired' or 'The token is expired' in the Window...

Fix Windows Search 504 Gateway Timeout Error

You open Windows Search, type a query, and instead of results you see a 504 gateway timeout error...

Fix Windows Store Error 0x80073cf9: Clear Cache & Repair

You try to install or update an app from the Microsoft Store, and you get error 0x80073cf9. Usual...

Windows Security Connection Timeout Checklist

When Windows Security fails to connect to the internet, you might see error messages like "Connec...

Fix VirtualBox Kernel Driver Not Installed on Windows 10