Many thx for your hint! I normally clean up cluster by removing subscriber and recreate it before new setup.Nevertheless I will follow Kostia's recommendation and contact TAC as I am now interrested in their magic ;)

Hi,I am facing a similar but completely different problem:Installed 11.6 UCCX-cluster. Successfully upgraded publisher to 12.5.Subscriber already has 12.5 on inactive partition but switch-version failed.As the system is quite new I thought reinstalla...

Just got the exact same request from customer using Finesse 11.6Was there any progress in this matter?Any chance meanwhile to disable or hide "Start Monitoring"?ThxAndreas