Checklists for software errors, setup, and tool workflows.

Fix Docker Build Error: 'failed to solve: manifest not found'

You run docker build and get an error like:

failed to solve: error fetching ...

Fix SSH Host Key Verification Failed for GitHub

When you try to clone a repository or push to GitHub over SSH, you might see an error like:

Fix Windows Terminal Alternatives Not Working on Mac

You installed a terminal emulator designed for Windows—like Windows Terminal, Cmder, or ConEmu—on...

Fix Windows 11 Activation Rate Limit Error

You're trying to activate Windows 11 and see an error like "Activation rate limit reached" or "To...

Fix Windows Defender High Memory Usage During Sync

You notice your PC slows down during file sync operations—OneDrive, Dropbox, or local sync tools—...

Windows Security 502 Bad Gateway: Troubleshooting Checklist

If you see a 502 Bad Gateway error when opening Windows Security, it usually means the app can't ...