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 &#...

Fix Windows Update Error 0x80070005 Using Command Prompt

Windows Update error 0x80070005 typically indicates an access denied problem. This often happens ...

Fix 'docker network not found' Error on Mac

If you're on a Mac and Docker returns network not found when you try to run or i...

Fix Windows Update Service Not Running Due to Group Policy

If Windows Update shows the service is not running and you suspect Group Policy, the problem is o...

Fix Firefox Secure Connection Failed Error (Mozilla)

When Firefox shows 'Secure Connection Failed' and a message like MOZILLA_PKIX_ERROR_<...