Checklists for software errors, setup, and tool workflows.

How to Fix Command Prompt Not Opening in Windows 11

You click Command Prompt but nothing happens. The window doesn't appear, or it flashes and closes...

Windows Defender and Ubuntu Dual Boot Setup Guide

If you run a dual-boot system with Windows and Ubuntu, you may notice that Windows Defender somet...

OneDrive Sync Error 404 Not Found: Causes and Fixes

You open OneDrive and see a '404 Not Found' error during sync. This usually means OneDrive can't ...

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 Outlook Connection Refused Error 0x80040115

Outlook error 0x80040115 usually appears as "Connection refused" or "Cannot start Microsoft Outlo...

How to Fix OpenVPN Certificate Verification Failed

You see "certificate verification failed" when connecting to an OpenVPN server. This usually mean...