Checklists for software errors, setup, and tool workflows.

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Fix Windows Security High Memory Usage (MsMpEng.exe)

You open Task Manager and see Windows Security (the process is MsMpEng.exe) using 500 MB or more ...

How to Fix Microsoft Teams Proxy Error: Step-by-Step Guide

When Microsoft Teams shows a proxy error, it usually means the app can't reach its servers becaus...

How to Fix Windows Defender Authentication Failed Error

If you see "Authentication failed" when opening Windows Defender or trying to run a scan, it usua...

How to Install Windows Security on Ubuntu (via Virtual Machine or Wine)

If you're looking to run Windows Security (Microsoft Defender) on Ubuntu, you've hit a fundamenta...

Fix 'BitLocker Module Not Found' Error During Windows 10 Setup

You're installing or upgrading Windows 10 and see the error: "BitLocker module not found"...

Fix Windows Security Connection Refused Certificate Error
When you see 'connection refused' combined with a certificate error in Windows Security, it usual...