The recent KB29166583 hotfix for Microsoft Configuration Manager version 2403 addresses security vulnerabilities, particularly improving the security between the Management Point and the site server database. This update strengthens the overall security posture by recommending the use of an alternate account instead of a computer account for Management Point connections. The hotfix was initially released in early September 2024 but was temporarily revoked due to issues. A revised version was republished later in the month.
For those who had already installed the original update, the revised hotfix will appear in the console as another instance of KB29166583, allowing administrators to install the fixed version without complications. The hotfix doesn’t require a system restart or a site reset, but secondary sites need to be manually updated by using the Recover Secondary Site option from the Configuration Manager console.
This update ensures a more secure environment while making it easier to manage security configurations within the Configuration Manager 2403 framework. For more details, you can read the official documentation on the Microsoft Learn website.
Source : https://learn.microsoft.com/en-us/mem/configmgr/hotfix/2403/29166583