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

Chrome Profile Can't Connect to Localhost: Fixes

You try to access a local development server at http://localhost:3000 (or another po...

Fix 'File Locked by Unknown Process' in Command Prompt

You try to delete, rename, or move a file, but Windows says it's locked by an unknown process. Th...

How to Fix UFW Firewall Port Not Open in Ubuntu

You've configured UFW to allow a port (e.g., 8080) but connections still fail. The port appears c...

Outlook PST File Locked: How to Unlock and Access It

You try to open your Outlook data file (PST) and get an error that it's locked or cannot be acces...

Windows Activation Stuck on Pending: How to Fix

You're trying to activate Windows, but the status just says "Pending" and never moves. This usual...

Fix Git Token Expired Error in CMD: Step-by-Step