Microsoft Fixes Windows 10 1809 Issue That Broke Defender ATP

[steven36]

Microsoft resolved a known issue causing Microsoft Defender Advanced Threat Protection (ATP) to stop running and fail to send reporting data on some Windows devices after installing the KB4520062 optional non-security update.

 

 

Some Windows 10 customers affected by the now-fixed bug also received 0xc0000409 errors in the Event Viewer on MsSense.exe according to the known issue's entry.

 

The optional non-security KB4520062 update behind the issue was released on October 15 and it was designed to fix a problem leading to black screens being displayed during startup on the first sign in after installing updates.

Microsoft Windows Defender Antivirus not affected

The issue was acknowledged by Redmond on October 17, 2019, and it was described as impacting Microsoft Defender ATP on both client and server Windows versions were the Windows 10 October 2018 Update was installed.

 

The full list of affected platforms includes Windows 10 version 1809, Windows 10 Enterprise LTSC 2019, Windows Server version 1809, and Windows Server 2019 platforms.

 

As Microsoft noted on the issue's Windows 10 Health Dashboard entry, the consumer-grade Microsoft Windows Defender Antivirus was not affected by this bug.

 

The company addressed the Microsoft Defender ATP issue in the KB4523205 cumulative update released yesterday, as part of the November 2019 Patch Tuesday.

Update and battery drain issues fixed in Windows 10 1903

Yesterday, Redmond also fixed two other known issues introduced over five months ago, causing abnormal battery drain and update installation failures issues on Windows 10 1903 devices.

 

The first resolved issue impacted both client and server Windows 10, version 1903 platforms, while the other affected Windows 10, version 1903 and Windows 10, version 1809 client platforms.

 

The battery drain problems were caused by a range of incompatible Intel Display Audio device drivers (versions 10.25.0.3 through 10.25.0.8). The update failures affected devices where the KB4497935 cumulative update was installed.

 

These Windows 10 1903 known issues were fixed on the same day the Windows 10 November 2019 Update started rolling out (also known as Windows 10, version 1909) with feature improvements and bug fixes.

 

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