In order to do a local repro in our test machines and analyze the issue, I want to confirm all the operations you took:
1. The cluster is in Enterprise + Private.
2. You added 10G adapters to all the nodes in the cluster.
3. On HN, you renamed 1G adapter from Enterprise to Enterprise.old and gave this name to the 10G adapter.
4. Cluster stopped working.
5. On HN, you deleted Enterprise.old.
6. You changed the topology to Enterprise Only.
7. On HN, you renamed Enterprise to Private and then renamed it back.
And here are several questions:
1. Were Enterprise and Enterprise.old located in the same subnet?
2. Did you see any error messages in Cluster Manager? No matter where and when you saw them, please share the details.
3. Did you perform renaming/deleting adapters only on HN or on all the nodes in the cluster?
4. Where did you see the WMI error?
5. Ideally, you only want to upgrade all the nodes' Enterprise adapter from 1G to 10G, right? Is the 1G adapter planned to be removed?