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Microsoft Defender Event 7001/7000  

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Hayden
(@hayden-kirk)
Member Admin
Joined: 5 years ago
Posts: 85
08/08/2020 8:16 pm  

Windows Security [Microsoft Defender] has started throwing error messages in Event Viewer, in both 1909 and 2004, apparently in the latest Defender Platform 4.18.2007.8:

Event 7001:  “The Windows Defender Antivirus Network Inspection Service service depends on the Windows Defender Antivirus Network Inspection System Driver service which failed to start because of the following error:   The supplied user buffer is not valid for the requested operation.”

Event 7000:  “The Windows Defender Antivirus Network Inspection System Driver service failed to start due to the following error:   The supplied user buffer is not valid for the requested operation.”

The only fix found so far is to disable Core Isolation and Virtualization Based Security, by going to:  Windows Security->Device Security->Core Isolation->toggle off memory integrity.  Then, on reboot, the above errors stop.

See more here https://answers.microsoft.com/en-us/windows/forum/all/windows-defender-antivirus-network-inspection/e3ed244b-6fd1-4a46-9828-1c0ba973dacc


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