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

Fix Windows Security Service Unavailable Permission Denied

You open Windows Security and see 'Service unavailable' or 'Permission denied'. The app may not o...

Command Prompt Configuration for Beginners Checklist

If you're new to the Windows Command Prompt, the default black-and-white window can feel a bit ba...

How to Run PowerShell Scripts on Mac (Using PowerShell Core)

If you're trying to run a PowerShell script on a Mac, you'll quickly find that the classic Window...

Fix Windows Defender Can't Connect to Microsoft Server

When Windows Defender shows 'Can't connect to Microsoft server', it usually means the antivirus c...

Troubleshoot 502 Bad Gateway in Windows Terminal: Checklist

You're using Windows Terminal and suddenly see a 502 Bad Gateway error when tryi...

Fix Chrome SSL Certificate Error: Invalid Common Name