Symptoms
After you use Windows Cluster Administrator tool to change the network name of a Microsoft SQL Server Analysis Services (SSAS) failover cluster instance, you can't use the SQL Server Setup program to modify the failover cluster instance that has the changed network name.
Note This issue occurs on the SSAS version from SSAS 2008 to SSAS 2017.
Cause
This problem occurs because the name for the cluster instance is not changed in the registry when you perform the change in a tool that is not a part of SQL Server.
Resolution
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows.
To resolve this problem, change the cluster name in the registry on each node in the failover cluster. To modify the cluster name on a node in the cluster, follow these steps:
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Start Registry Editor.
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Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\InstanceId\Cluster
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In the details pane, right-click ClusterName, and then click Modify.
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Type the correct cluster name in the Value Data box, and then click OK.
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On the File menu, click Exit
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Repeat step 1 through step 5 on each node in the cluster.
Note The node can remain online because the registry entry is only used by the Setup program.
