This is what i get on a Windows 10 / IIS8 machine when i tried to run “aspnet_regiis.exe /iru”. Of course, adding ASP.NET 4.7 in IIS didnt solve the initial problem.
Administration utility to install and uninstall ASP.NET on the local machine.
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Start installing ASP.NET (4.0.30319.0).
This option is not supported on this version of the operating system. Administrators should instead install/uninstall ASP.NET 4.5 with IIS8 using the “Turn Windows Features On/Off” dialog, the Server Manager management tool, or the dism.exe command line tool. For more details please see http://go.microsoft.com/fwlink/?LinkID=216771.
Finished installing ASP.NET (4.0.30319.0).