[German]A little supplement to the November 2019-Patchday. Microsoft has fixed the problem caused by an October update with the Windows Defender ATP error 0xc0000409 under Windows 10 version 1809 with a cumulative update from November 2019.
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What is the Windows Defender ATP issue about?
In enterprise environments, Windows Defender Advanced Thread Protection – an advanced security solution from Microsoft – can be optionally booked. There is a problem with KB4520062 for Windows 10 Version 1809, which was released as an optional update on October 15, 2019 (see Windows 10 Updates (10/15/2019)).
The Microsoft Defender Advanced Threat Protection (ATP) service can stop and no more data is transferred to the cloud. In addition, the error code 0xc0000409 for MsSense.exe is entered in the Event Viewer. Microsoft resolved the issue on October 18, 2019 by revising the support post as Known Issues for this update:.
After installing this update, the Microsoft Defender Advanced Threat Protection (ATP) service might stop running and might fail to send reporting data. You might also receive a 0xc0000409 error in Event Viewer in MsSense.exe.
Microsoft promised a solution by mid-November 2019 and recommended affected administrators not to install the update on the devices in an affected environment. I had reported about this issue in the blog post Windows 10 V1809: Defender ATP erzeugt Fehler 0xc0000409 nach Update KB4520062, but forgot that topic.
The Windows Defender ATP bug has been fixed
The cumulative update KB4523205 was also released on November 12, 2019 (see Patchday Windows 10 Updates (November 12, 2019)). The following note can be found in the list of fixes:
Addresses an issue that might cause the Microsoft Defender Advanced Threat Protection (ATP) service to stop running and stop sending reporting data.
I only noticed it briefly, without having established the connection to the article Windows 10 V1809: Defender ATP erzeugt Fehler 0xc0000409 nach Update KB4520062,. Bleeping Computer noticed that the error described above was fixed.
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