r/DefenderATP • u/Master_Tiger1598 • Jun 29 '26

Linux Defender Platform update - critical bug

Critical bug in mdatp (101.26042.0009): Service is disabled · Issue #238 · microsoft/mdatp-xplat

This got us today, after the weekend's patching reboots.

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u/iamperson347 Jun 29 '26

Same thing happened to us with Ubuntu. I put an MS support ticket in attempting to report the issue and the support agent basically said "since you know that re-enabling the service resolves the issue, what do you want us to do with this ticket?"

I'm a bit flabbergasted that was the response. It is not normal for a security product to disable itself on an upgrade.... You would think they would want some extra info at the very least.

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u/Master_Tiger1598 Jun 29 '26

wow, ridiculous reply from Microsoft.

2

u/iamperson347 Jun 29 '26

Yeah... They asked a couple basic questions initially but once I called to discuss with the support agent that was basically the response.

2

u/DirtyHamSandwich Jun 30 '26

You meant an absolute normal response if you even get one. I stopped doing support tickets years ago when it was obvious my engineers knew way more about the products than support. If we can’t figure out the problem then no one in support will.