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...

Fixing Outlook Version Mismatch with Exchange 2019

When you see an error like "Your Outlook version does not match the version of Exchange Server" i...

Java JDK Not Recognized After Installation: Fixes and Checks

Fix 'Outlook Service Unavailable' After Disabling Firewall

If you disabled your firewall and now Outlook shows 'service unavailable,' you’re not alone. This...

How to Fix RDP SSL Certificate Mismatch Errors

When you try to connect to a remote desktop and see an error like "The certificate is not from a ...

Microsoft Teams Token Expired Troubleshooting Checklist

If you see an error like "Your token has expired" or "Authentication needed" in Microsoft Teams, ...