I'm working on transitioning to Azure Update Manager to patch our on-premise servers through Arc, and it's mostly been great. However, I've run into a snag. We have several servers with .NET Core 8.0 installed for running web applications. The recent update from October 14th didn't install via AUM. I found that the servers need to have the option to install updates from 'other Microsoft products' enabled, either locally or through Group Policy. I've activated this setting via GPO, yet the .NET Core update still doesn't appear when I scan with AUM. Is there something I'm missing to get this working?
5 Answers
Could it be that .NET Core is installed in a non-standard way that AUM isn't picking up on? That might be the issue.
Make sure there’s a registry key that allows .NET to be updated alongside other Microsoft products. I can't recall the exact key, but it's worth checking.
If you're also dealing with Ubuntu servers, just a heads up—this method can be hit or miss. It often only works about 30% of the time.
When you enable Microsoft Update via GPO, don't forget that the Windows Update service needs to be restarted for changes to take effect. You can run a command to check if it’s properly activated and, if it is, perform a local update check. If Windows Update can’t find the updates, AUM won’t either!
It can sometimes take a few days for AUM to detect new updates after enabling that GPO. Be patient—Microsoft's timing is often a bit off!

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