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

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Outlook Rate Limit Error: Complete Troubleshooting Checklist

If you see an error like “You’ve hit a rate limit” or “Too many requests” in Outlook, your accoun...

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...

Fix Microsoft Teams Authentication Failed After Password Change

After changing your Microsoft 365 or corporate password, you may see an authentication error in M...

How to Reinstall Windows Defender in Windows 11

If Windows Defender (Microsoft Defender Antivirus) is missing, disabled, or not working correctly...

How to Fix Remote Desktop Service Not Available

When you try to connect to a remote PC and see "Remote Desktop Service Not Available" or "The rem...