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

Check Which Process Is Using a Port on Windows

When a service or application fails to start because a port is already in use, you need to identi...

OBS Black Screen Troubleshooting Checklist

You launch OBS Studio, start a scene, and the preview shows a black screen. This is one of the mo...

Fix Windows Activation Key Not Recognized Error

You enter your Windows product key during installation or activation, and get an error that the k...

Fix 'Outlook Path Not Found' Error After Migration

Fix Outlook Invalid Configuration After Update

After a Microsoft Office or Windows update, Outlook may show an "invalid configuration" error. Th...

Fix PowerShell Authentication Token Expired in Automation Scripts

When running PowerShell automation scripts that interact with cloud services or APIs, you may enc...