Knowledge base for software setup, errors, and daily tool work.

How to Fix Command Prompt Not Working on Mac

If you're trying to use the command prompt on a Mac, you're likely referring to the Terminal app....

How to Fix Windows Update 502 Bad Gateway Error

You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...

Fix Jupyter Kernel Not Starting on Windows 10

When you launch a Jupyter notebook and the kernel never starts—or shows a 'Kernel error' or 'Conn...

Fix Windows Defender High CPU Usage When Scan Stuck

If Windows Defender is using nearly 100% CPU and a scan appears stuck (e.g., progress bar frozen ...

Fix PowerShell DNS Error 0x8007274d: Practical Steps

Command Prompt Version Mismatch: Practical Checklist

You're in the middle of a build process or running a script when you see an error about a command...