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 &#...

Git index.lock File Exists Even After Deleting: Fixes

You delete the .git/index.lock file, but Git still says it exists. This can happen d...

Fix Remote Desktop Connection Blocked by Firewall

When you try to connect to a remote PC using Remote Desktop (RDP) and get an error like “Remote D...

Fix 'git remote origin already exists' with Wrong URL

You run git remote add origin <url> and get: fatal: remote origin alread...