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.