Good news :-)
I've contacted vmware support, and we have resolved the problem:
we installed sso with command line option, we checked the log file, and there was no error.
So we go on with the installation of inventory service, web client and vcenter server. We had only a problem with the vcenter server installation, but I think, this was becuse not all services was startet. So we must reinstall vcenter server, now is running all!
I had a second upgrade to do => Same sit., I've installed sso with cli, then I've looked, if all services was started (had to start 2 or 3 services), then I installed the rest without a problem :-)
The only strange thing is, that the "programs and features" is still showing the old version of sso...
PS:sorry for my bad english...