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

Fix FFmpeg Audio Sync Issues After Conversion

You encoded a video with FFmpeg, but the audio drifts out of sync—often noticeable as the video p...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Error 0xc004f074 Windows 10 Activation Fix

You see error 0xc004f074 when trying to activate Windows 10. It usually means the activation serv...

How to Fix Windows Update 404 Not Found Error

When Windows Update returns a 404 Not Found error, it usually means the update server can't locat...

WinSCP SFTP Permission Denied: Practical Fixes

When you see a "Permission denied" error in WinSCP while using SFTP, it usually means the server ...

Windows Defender on Mac: Installation Checklist

If you're trying to install Windows Defender on a Mac, you've probably run into confusion: Window...