Checklists for software errors, setup, and tool workflows.

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

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

Fix Microsoft Teams Proxy Error After Update

After a Microsoft Teams update, some users see a proxy error when trying to sign in or connect. T...

Cloudflare Error 521: Web Server Is Down Checklist

If you see Cloudflare error 521 (web server is down), it means Cloudflare cannot establish a TCP ...

Stop Windows Defender High CPU Usage: 5 Practical Fixes

If you notice your PC slowing down and the fan spinning up, Windows Defender might be using exces...

Fix Windows Activation After Hardware Change

If you recently upgraded your PC's motherboard, CPU, or hard drive and now see “Windows is not ac...

OBS Virtual Camera Black Screen: How to Fix

If you see a black screen when using OBS Studio’s virtual camera in Zoom, Teams, or other apps, t...