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

How to Fix SSH Connection Timed Out on Linux

When you try to SSH into a Linux server and get "Connection timed out", it usually means the clie...

Fix 'UFW Status Shows Port Not Active' Error

You run sudo ufw status and see a rule for a port, but the port isn't actually activ...

How to Fix Abnormal Memory Usage in CMD on Windows

How to Fix OBS Black Screen on Mac

If you see a black screen in OBS when trying to capture your display or a specific window on Mac,...

Fix Outlook 404 Not Found Error on Windows 10

If you see a '404 Not Found' error when opening Outlook or clicking a link in an email, it usuall...

BitLocker Update Stuck at 0%: How to Fix

You're running a Windows update and the progress bar shows BitLocker encryption stuck at 0%. This...