HCI Stack 23H2 WMI - RPC Server is Unavailable

DanielF1395 

We are encountering the same issue with a two-node Azure Stack HCI cluster (Dell MC-760) of one of our customers (same version). We are collaborating with Dell and Microsoft to resolve it.

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That error is straight out of COM code inspection of firewall behavior.  Firewall (or something else?) is preventing the automatically generated DCOM code in our service from opening a TCP port. It's not even reaching our custom code, it's in DCOM machinery. 

Let me set expectation that this may take time during the investigation as it becomes a bit complicated. There will be some modification into the RPCSS process and iDNA may require with the network stack debugging (it depend how far we will go through this). Therefore, it wont be straight forward solution.

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Once I have an update, I will provide you with the details.