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Windows Server 2016 S2D Cluster - SDDC Management Cluster Resource fails to come online

David Tiller 1 Reputation point
2020-08-10T20:57:35.307+00:00

Windows Server 2016
version 1607 (OS Build 14393.3808)

I have a 4 node Windows Server 2016 S2D cluster and I want to use Windows Admin Center to manage it. However, when I try to connect, it fails saying "Unable to create the "SDDC Management" cluster resource (required). I have fully updated all the nodes using cluster aware updating. Also, I have created the SDDC Management cluster resource using the following command:

Add-ClusterResourceType -Name "SDDC Management" -dll "$env:SystemRoot\Cluster\sddcres.dll" -DisplayName "SDDC Management"

However, when I go into Failover Cluster Administrator it is in a failed state and I can't get it to start. I thought it might be an issue with the firewall, so I disabled the firewall on all nodes and the machine running WAC. It still will not start.

From the cluster log, I can see the following:

00000dbc.00000fc4::2020/08/10-20:26:44.610 WARN [RCM] HandleMonitorReply: ONLINERESOURCE for 'SDDC Management', gen(3) result 5018/1722.
00000dbc.00000fc4::2020/08/10-20:26:44.610 INFO [RCM] Res SDDC Management: OnlinePending -> ProcessingFailure( StateUnknown )
00000dbc.00000fc4::2020/08/10-20:26:44.610 INFO [RCM] TransitionToState(SDDC Management) OnlinePending-->ProcessingFailure.

I have removed the clustered resource and added it again with the same result. Any ideas on what is happening here?

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  1. Ian Xue 37,621 Reputation points Microsoft Vendor
    2020-08-11T09:26:14.03+00:00

    Hi,
    Thanks for your posting. I assume you've already read this official document:
    https://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/use/manage-hyper-converged

    Regarding Windows Admin Center based issue, I suggest you refer to experts from the Windows Admin Center forum to get professional support:
    https://techcommunity.microsoft.com/t5/Windows-Admin-Center/bd-p/WindowsServerManagement
    Hope this helps.

    Best Regards，
    Ian

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