I have a two-node two-instance SQL Server 2008 R2 SP2 cluster running on Windows Server 2008 R2. I am trying to remove SP2 from the cluster for testing purposes and I have successfully done if before by going into Control Panel->Programs->Programs and Features->Installed Updates.
In there I can simply select the SP2 update and remove it. All good.
I've reapplied the service pack, rebooted and tried to remove it using the command line by doing:
setup.exe /action=uninstall
and I get this:
Microsoft (R) SQL Server 2008 R2 Setup 10.50.4000.00 Copyright (c) Microsoft Corporation. All rights reserved.Basically nothing happens. HOWEVER, the SP2 update is now no longer in Control Panel. I would like to remove SP2, but how do I do it now? Is there another way? If I run the patch installer setup.exe without parameters, it thinks that SQL Server is at 10.50.4000 (which is true), because that's what SELECT @@VERSION says. Any ideas? I really don't want to do a remove node.