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

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix Microsoft Teams Microphone Not Detected in Windows

Common Causes

Fix OneDrive Sync Fails with 504 Gateway Timeout Configuration

You start OneDrive sync and see a 504 Gateway Timeout error. This usually means the sync request ...

Fix Microsoft Teams Token Expired Error

You're working in Microsoft Teams when a message pops up: "Your token has expired" or "Authentica...

How to Rebuild a Single Service Without Cache in Docker Compose

When you run docker compose build --no-cache, Docker rebuilds every service from scr...

Fix Command Prompt Crashing Due to Corrupted System Files

If Command Prompt opens briefly and then closes immediately, or crashes during use, corrupted sys...