SCVMM 2012R2 Upgrade auf 2016 Failed mit der Datenbank

11:01:03:Doing Postinstall task for PangaeaServer
11:01:03:ProcessInstalls: Install Item VMM management server was successful.  We will launch the post process delegate.
11:01:24:Windows feature RSAT-Clustering-PowerShell already enabled, skipping
11:01:26:Windows feature WindowsStorageManagementService already enabled, skipping
11:01:28:Windows feature UpdateServices-API already enabled, skipping
11:01:31:Windows feature FabricShieldedTools already enabled, skipping
11:01:33:Windows feature RSAT-Storage-Replica already enabled, skipping
11:01:33:Out of Impersonation
11:01:33:Out of Impersonation
11:01:33:VMMPostinstallProcessor threw an exception: Threw Exception.Type: Microsoft.VirtualManager.DB.CarmineSqlException, Exception.Message: Unable to connect to the VMM database because of a general database failure.
Ensure that the SQL Server is running and configured correctly, then try the operation again.
11:01:33:StackTrace:   at Microsoft.VirtualManager.DB.SqlRetryCommand.ExecuteNonQuery()
   at Microsoft.VirtualManager.Setup.SetupDatabaseHelper.AlterDB(String databaseName, String instanceName, String commandString)
   at Microsoft.VirtualManager.Setup.SetupDatabaseHelper.AlterDB(String databaseName, String instanceName)
   at Microsoft.VirtualManager.Setup.VirtualMachineManagerHelpers.CreateDB()
   at Microsoft.VirtualManager.Setup.InstallItemCustomDelegates.PangaeaServerPostinstallProcessor()
11:01:33:InnerException.Type: System.Data.SqlClient.SqlException, InnerException.Message: Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
The statement has been terminated.
11:01:33:InnerException.StackTrace:   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at Microsoft.VirtualManager.DB.SqlRetryCommand.ExecuteNonQuery()
11:01:33:ProcessInstalls: Running the PostProcessDelegate returned false.
11:01:33:ProcessInstalls: Running the PostProcessDelegate for PangaeaServer failed.... This is a fatal item.  Setting rollback.
11:01:33:SetProgressScreen: FinishMinorStep.
11:01:33:ProcessInstalls: Rollback is set and we are not doing an uninstall so we will stop processing installs
11:01:33:****************************************************************
11:01:33:****Starting*RollBack*******************************************
11:01:33:****************************************************************