I'm trying to decommission one of our Exchange 2010 servers. I've encountered several errors, most of which I've been able to resolve except for 2 that seem intertwined and pointing to each other.
When I try to uninstall Exchange through the control panel - programs and features, it fails when doing the readiness check for the mailbox role with the error - (paraphrased) - this computer is part of a cluster and must be removed from the database availability group.
So I use powershell to issue the command "remove-DatabaseAvailabilityGroupServer -Identity DAG1 -MailboxServer servername"
This command throws the error - (paraphrased) "Mailbox Server servername is not part of the DAG"
I've attached a screen print of these errors
As you can see, it appears to be a viscious circle - can anyone help me get of this merry-go-round?