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

Fix Remote Desktop Connection Refused Due to Firewall

You try to connect to a remote Windows PC via Remote Desktop, but get an error like “Remote Deskt...

Fix Outlook Permission Denied When Sending Email

You’re trying to send an email in Outlook, but you get a “permission denied” error. The message m...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

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...

Remote Desktop 502 Bad Gateway: Server Overload Fixes

When you try to connect to a remote desktop and see a 502 Bad Gateway error, the...

How to Activate Windows with a Digital License

If you've upgraded to Windows 10 or 11 from a previous version, or bought a new PC with Windows p...