OK - I found it!Running the Setup as Administrator - that works fine.I'm sorry that I didn't found that Thread but I use a different native language so I had needed to search and read until my time left. :rolleyes:Thanks a lot indeed!
... only one Time!Does anybody know this Problem?Reinstallation works fine but the same Problem how often I want.Unimportant which Version I install in my (up to date) Windows 10 pro - it is only running one time.There is no Windows 10 Version of GP...