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 &#...

VS Code Source Control Not Detecting Changes on Mac: Fixes

You make edits in VS Code on your Mac, but the Source Control panel shows nothing. No files appea...

Git Merge Unrelated Histories Without Losing Commits

You've cloned a repo, added a new remote, and now you need to merge two branches that don'...

Fix Chrome Memory Spikes When Watching Videos

You're watching a video in Chrome, and suddenly the system slows down, fans spin up, or tabs ...

How to Fix Windows Update Error 0x800f081f (Missing Files)

You see error 0x800f081f when running Windows Update, often with a message like 'The source f...

Fix VS Code Git Authentication Failed After Update

After updating Visual Studio Code, you may see an error like "Git: Authentication failed"...