We are running Exchange 2010 SP3 Rollup 7. We have 2 CAS/HT servers and 2 MB servers running on physical servers running Windows 2008 R2 SP1 all updated. First let me say that our environment is working just fine but when I go into Failover Cluster Manager, I can see that Cluster Network name is not online and when I try to bring it online, I receive the following error:
Cluster IP address resource 'IPv4 Static Address 1 (Cluster Group)' cannot be brought online because the cluster network 'Cluster Network 2' is not configured to allow client access. Please use the Failover Cluster Manager snap-in to check the configured properties of the cluster network.
I went to Cluster Network 2 and sure enough, it was set to "Do not allow cluster network communications and this network". So, I selected "Allow cluster network communications on this network" and hit OK. I tried to bring the cluster name online and got the same error. I went back to the Cluster Network 2 and "Do not allow cluster network communications and this network" was selected again. For some reason, it's not letting me change this setting.
I hit on an article (http://blogs.technet.com/b/timmcmic/archive/2010/05/12/cluster-core-resources-fail-to-come-online-on-some-exchange-2010-database-availability-group-dag-nodes.aspx
) that talked about the issue and how to fix it but it did not work. I'm not sure what to try next.