Checklists for software errors, setup, and tool workflows.

Fix Microsoft Store 404 Not Found Error

Seeing a 404 Not Found error when opening the Microsoft Store is frustrating, but it's often fixa...

How to Fix Slow Windows Defender Scan Speed

If your Windows Defender (Microsoft Defender Antivirus) scan is taking much longer than usual—som...

How to Enable Windows Defender Service Manually

If Windows Defender won't start or you see warnings that it's turned off, the underlying service ...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

Microsoft Teams 404 Error: Causes and Fixes

When you see a 404 error in Microsoft Teams, it usually means the app can't find a specific resou...

Fix Windows Activation Connection Timeout After Network Change

If you recently changed your network—switched Wi-Fi networks, moved from Ethernet to Wi-Fi, or ch...