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

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 Windows Update 502 Bad Gateway Due to DNS Configuration

If you see a '502 Bad Gateway' error when running Windows Update, the problem is often on the net...

Outlook Not Receiving Emails: Troubleshooting Checklist

If Outlook stops receiving new emails, the problem is often one of a few common causes. Work thro...

Bypass PowerShell Execution Policy for a Single Script

You have a PowerShell script that won't run because the execution policy is too restrictive. Inst...

How to Fix Microsoft Teams Audio Not Working on Ubuntu

If you're using Microsoft Teams on Ubuntu and the audio isn't working—no sound during calls, micr...

Fix 'Outlook File Locked by Another User Permission Denied' Error