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What is NT Authority/SYSTEM and why is it installing some of the security patches on my VM?

kobulloc msft 50 Reputation points
2024-07-18T23:21:25.66+00:00

Note: Based on common issues that we have seen from customers and other sources, we are posting these questions to help the Azure community.

After installing security patches on my VM (Windows Server 2019), I noticed that one of the KBs was installed by NT Authority/SYSTEM and not my admin account. Why was it using NT Authority/SYSTEM?

Azure Virtual Machines
Azure Virtual Machines

An Azure service that is used to provision Windows and Linux virtual machines.

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  1. kobulloc-MSFT 26,861 Reputation points Microsoft Employee Moderator
    2024-07-18T23:22:21.1033333+00:00

    Note: Based on common issues that we have seen from customers and other sources, we are posting these questions to help the Azure community.

    NT Authority/SYSTEM is a built-in Windows account with the highest level of privileges on a local system. It is more powerful than an administrator account and has unrestricted access to all local system resources and processes.

    Additional reading:

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