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 Fix Windows Security Real-Time Protection Not Turning On

If you see that Windows Security's real-time protection is stuck off and won't turn on, you're no...

How to Fix PowerShell Version Mismatch Error

How to Reset Windows Defender Cache in Windows 10

Windows Defender (now Microsoft Defender Antivirus) stores temporary files and definitions in a c...

Fix OneDrive DNS Resolution Issue Step by Step

If OneDrive won't sync and you see errors like 'We can't connect to the server' or 'DNS resolutio...

Fix Edge Update Failed on Windows 10: Step-by-Step Guide

When Microsoft Edge fails to update on Windows 10, you might see an error like “Update failed” or...