Checklists for software errors, setup, and tool workflows.

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Docker Container Exits Immediately on Linux: Fixes

You start a Docker container, but it exits immediately. This is a common issue on Linux. The cont...

How to Fix 'Permission Denied' When Saving Files in VS Code

You're editing a file in VS Code, hit save, and get a 'permission denied' error. This...

Fix Windows Update Error 0x80070002 on Windows 11

If you see error 0x80070002 when running Windows Update on Windows 11, it usually means Windows c...

Fix VS Code Source Control Not Detecting File Modifications

You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...

How to Fix Git Push Rejected (Non-Fast-Forward) Error

You run git push and get an error like ! [rejected] main -> main (non-fast-...