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

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

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

Outlook Cannot Connect to Server: Practical Fixes

When Outlook says it cannot connect to the server, email stops syncing and you may see a “Disconn...

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...

Fix Microsoft Teams SSL Certificate Errors: Step-by-Step

You launch Microsoft Teams and see an error like "Can't connect to server" or "SSL certificate er...

FileZilla FTP Connection Timeout Setup Guide

If you're getting 'Connection timed out' errors in FileZilla, the problem is usually a network or...

Fix 502 Bad Gateway in Windows Terminal: Firewall Steps

If you see a 502 Bad Gateway error in Windows Terminal, it usually means a network component (lik...