I new reboot solved it. Weird.
I am trying to install according to this : Guide
But I dont get anything in the start Menu.
When I try to locate the files in the installation folder i do see python.exe and the folder structure. I can run the python.exe in this as my other python version I have installed. But I cant run Anaconda Navigator.
The script try to start. I see the quick console screen appear. But then it closes.
I have installed Anaconda as administrator and I have also tried to run Anaconda Navigator as administrator. I have also tried to uninstall and reinstall and also a a reboot.
There is no problem to run python scripts in general. I am new to python but am running scripts know and thin with VS and ArcGIS.