Unable to Attach Maintenance Configuration to a Windows 2012 R2 with ESU Enabled

Question

I have a handful of machines running Windows Server 2012 that are Azure Arc enrolled with a Extended Service Updates license assigned. When I try to attach an existing Maintenance Configuration to any of those machines, I get an error message stating:***Unable to attach maintenance configuration Thursday_2AM_Reboot_Win2012. Error while attaching maintenance configuration to XXXX. Error details: {Message:An error has occurred.}.***I followed all the steps listed here to set up the servers. Prepare to deliver Extended Security Updates for Windows Server 2012.

Answer 1

It seems you’re encountering an issue with attaching a Maintenance Configuration to your Windows Server 2012 R2 machines that are enrolled in Azure Arc with Extended Service Updates (ESU) enabled. Check if you have specified a sufficient number of cores for the ESU License. Physical core-based licenses require a minimum of 16 cores per machine, and virtual core-based licenses require a minimum of 8 cores per VM. Medical Insurance California Verify that the Connected Machine agent is version 1.34 or higher. If it’s lower, you need to update it to this version or higher. Make sure the connected machine is not running on Azure Stack HCI, Azure VMware solution (AVS), or as an Azure virtual machine, as WS2012 ESUs are available for free in these scenarios. Confirm that the Azure Arc-enabled servers are running the Windows Server 2012 or 2012 R2 operating system, as only these are eligible for ESU enrollment.