I have a clustered instance of SQL Server 2012 Enterprise Edition. The database engine won't start on one node. After failing to debug it, I'm trying to do a repair install on the node. When I do so, I get this error message:
SQL Server Setup has encountered the following error: The given key was not present in the dictionary.. For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft%20SQL%20Server&EvtSrc=setup.rll&EvtID=50000&EvtType=0xA0A72FEE%25400xD05BC945
The help link doesn't help. I've also tried removing a node from the cluster, which resulted in the same error. I've found instructions to manually remove a SQL Server installation, but those instructions are for stand-alone installations, so I'm reluctant to try that because I don't want to damage the working node. I'd appreciate any suggestions on how to proceed.