Checklists for software errors, setup, and tool workflows.

Fix Ubuntu apt update GPG missing key error

When running sudo apt update, you might see an error like:

The following sig...

How to Run Command Prompt as Administrator on Mac

If you're coming from Windows, you might be looking for a way to run something like Command Promp...

How to Fix Windows Update Stuck on Loading Black Screen

You start your PC, see the Windows logo, then it goes black with a spinning circle that never end...

Fix Microsoft Store Not Working Due to Proxy Settings

If the Microsoft Store won't load, shows errors, or fails to download apps, your proxy settings m...

Fix Missing Windows Security After Update

After a Windows update, you might find that Windows Security (formerly Windows Defender) is missi...

Fix 'Command Not Found' in Task Scheduler on Windows Server

When a scheduled task on Windows Server fails with a 'command not found' error, the task typicall...