Checklists for software errors, setup, and tool workflows.

Fix Chrome Profile Connection Refused Error

You open Chrome and see "Connection refused" or "ERR_CONNECTION_REFUSED" for every site, or only ...

How to Fix Chrome Not Downloading Files on Mac

You click a download link in Chrome on your Mac, and nothing happens—or the file starts but never...

Fix Jupyter Notebook Token Not Working on Ubuntu

You launch Jupyter Notebook on Ubuntu, but when you open the URL in your browser, the token promp...

Fix PowerShell Connection Timeout Due to Firewall Settings

You're running a PowerShell command that connects to a remote system, and it hangs for a while be...

Fix Microsoft Teams Microphone Not Detected in Windows

Common Causes

• Microphone permissions disabled for Teams in Windows settings.

How to Fix Firefox Not Responding on Windows 10

Firefox becomes unresponsive on Windows 10 for various reasons—a stuck process, corrupted profile...