Defender for Endpoint

Defender for Endpoint Migration: Troubleshooting Persistent Third-Party AV Registration

Intro I recently assisted a costumer with migrating to Defender for Endpoint. They had some windows 10/11 endpoints where the 3rd party Antivirus (AV) kept registered as primary Antivirus which by default put Defender …

January 28, 2026 · 4 min · Thomas Verheyden
Defender for Endpoint

Remotely Intune wipe devices in Defender for Endpoint isolation mode!

Intro Microsoft recently announced that device isolation exclusions in Defender for Endpoint are now generally available. This made me think about possible use cases for this new feature. Together with Bjorn Claes, we …

October 22, 2025 · 4 min · Thomas Verheyden
Defender for Endpoint

Guidance on how to manage products updates for Defender for Server on Linux distributions

Intro There are many helpful blog/videos posts about managing Microsoft Defender for Endpoint (MDE) updates on Windows, but there’s not much information available for MDE on Linux. In this blog post, I’ll share my …

August 27, 2025 · 8 min · Thomas Verheyden
Defender for Endpoint

Defender AV Mystery: Solving the ‘Source Files could Not be Found’

Intro This week I bumped into a problem that I had not experienced for several years at one of my customers. The customer was migrating from a 3rd-party EDR to Defender for Endpoint on their servers. During the …

June 23, 2025 · 3 min · Thomas Verheyden
Defender for Endpoint

MDE-Troubleshooter v1.6.1 available

What’s new: – Inspired by Yong Rhee “Resolving High CPU Utilization in MDE” session, added additional options to run the Performance analyzer, Overview is now by default. – Added ASR rules that went GA – Added a check if …

June 7, 2025 · 1 min · Thomas Verheyden
Defender for Cloud

Using Azure Arc only for Defender for Servers or Azure monitoring Agent? Lock it down!

Intro While reviewing Defender for Servers and AMA agent implementations across various customers, I noticed that not all of them are following best security practices for Azure Arc deployments. In this blog, I want to …

April 14, 2025 · 6 min · Thomas Verheyden
Defender for Cloud

After 2 years a new release of MDE-Troubleshooter!

Lately, I’ve been doing a lot of Defender for Endpoint deployment/configuration troubleshooting, which prompted me to dust off my MDE-Troubleshooter. I noticed it was missing some new and improved configurations, so I …

January 7, 2025 · 1 min · Thomas Verheyden
Defender for Cloud

New eBook, “Demystifying Microsoft Defender for Servers” by James Agombar

I’m thrilled to share the launch of the new eBook, “Demystifying Microsoft Defender for Servers” by James Agombar 🎉 I had the pleasure of being a technical reviewer for this eBook, and I can confidently say it’s a …

January 3, 2025 · 1 min · Thomas Verheyden
Defender for Endpoint

Fix: SENSE Service stuck in START_PENDING on WS2012R2 or WS2016? Check OOBE !

Intro This blog discusses a challenge I encountered with a client. They reached out for assistance in addressing issues during the deployment of Defender for Endpoint on Windows Server 2012 R2 and Windows Server 2016. …

November 27, 2024 · 4 min · Thomas Verheyden
Defender for Cloud

Tutorial: How to enable/disable Defender for Servers Plans at resources level 

Intro I noticed that more and more clients are starting to use mixed license model for Defender for Servers. Previous you could only enable Defender for Server at the subscription level. Microsoft also noticed this and …

March 6, 2024 · 3 min · Thomas Verheyden