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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a secure tunnel...

Fix Outlook Module Not Found Error 0x80040154

You open Outlook and get an error: 0x80040154 — "Class not registered" or "module no...

Fix Chrome Profile File Locked Without Deleting Profile

You try to launch Chrome and get a message that your profile is locked. This usually happens afte...

Fix 'Windows Security Authentication Failed' for Domain Credentials

How to Set Up Remote Desktop for Work from Home

You need to access your office computer from home. Remote Desktop Connection (RDC) is a built-in ...

Cloudflare Tunnel Setup Guide for Beginners

If you're trying to expose a local web server to the internet without opening firewall ports or d...