Checklists for software errors, setup, and tool workflows.

Fix Command Prompt Module Not Found After Update

After a Windows update, you might see a 'module not found' error when running commands in Command...

Fix Jupyter Notebook Token Not Working on Windows

When you start Jupyter Notebook (or JupyterLab) on Windows, it often opens a browser tab asking f...

Fix Windows Activation Permission Denied After Update

After a Windows update, you might see a “permission denied” error when trying to activate Windows...

Fix Git Clone Permission Denied (publickey) on Bitbucket

You try to clone a Bitbucket repository and see:

Permission denied (publickey).
fatal: Co...

Fix 504 Gateway Timeout in Windows Security After Update

If you see a 504 Gateway Timeout error when opening Windows Security after a recent update, it us...

How to Restart the Task Scheduler Service in Windows

If scheduled tasks aren't running or you see errors like "Task Scheduler service is not available...