I have set up OTW server for installing rich clients. Now we can install rich client on windows 7 but recently I wanted to install it on windows 10 and in the middle of installation it stops with an error:"regCreateKey: 5".
The error indicates you do not have write access to the registry.
Is UAC disabled or maybe you are not installing with admin rights? Note: just because you're logged in as an admin does not grant admin rights in Win10. You actually have to run the IE browser w/Run as administrator same as you would for the command line.