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

How to Set Up Windows Activation on Ubuntu Dual Boot

If you installed Ubuntu alongside Windows and now see an activation warning, you're not alone. Wi...

Fix Microsoft Teams 'Permission Denied' When Sharing Screen

When you try to share your screen in Microsoft Teams and get a 'permission denied' error, it usua...

Fix Windows Search Returning 404 Not Found in Command Prompt

If you see a "404 Not Found" error when using Windows Search from the Command Prompt, it usually ...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

After installing or updating Microsoft Office, Outlook may open ...

Fix Chrome DNS Error Caused by a Corrupted User Profile

If Chrome suddenly fails to load websites with a DNS error but other browsers work fine, a corrup...

How to Fix Windows Defender 502 Bad Gateway Error

If you see a '502 bad gateway' error in Windows Defender, it usually means the security service c...