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

How to Allow an App Through Windows Defender Firewall

If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....

Fix Windows Defender 404 Not Found After Update

After installing a recent Windows update, some users find that Windows Defender is missing or sho...

How to Fix 'Remote Desktop Command Not Found' Error

Windows Activation Offline Installer Setup Guide

If you're trying to activate Windows without an internet connection, the offline activation metho...

Fix Windows Update Setup Failed Rollback Changes

When a Windows update fails and you see "Undoing changes" or "We couldn't complete the updates, u...

Fix Command Prompt Dependency Conflict Error Code

When you see a 'dependency conflict error code' in Command Prompt, it usually means a required co...