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

Windows Security 404 Not Found: Setup and Fix Guide

When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...

How to Run PowerShell at Startup Without User Login

If you need a PowerShell script to run every time Windows starts, even before a user logs in, you...

How to Fix Chrome Port Already Allocated Error

When you see 'Port already allocated' in Chrome, it usually means another process is using the po...

Fix "Access Denied" Error When Chrome Extension Not Working

You install a Chrome extension, try to use it, and see "Access Denied." The extension might be di...

Java JDK Not Recognized After Installation: Fixes and Checks

Fix Microsoft Store App Version Mismatch Errors

You open a Microsoft Store app and get an error about a version mismatch, or the app won't start ...