I cannot create any web project in Visual Studio 2015

Question

For some reason I cannot create a new web project after having installed the latest .NET Core SDK/CLI. In the "New ASP.NET Web Application" dialog window I selected an "Empty" project and checked the "Web API" checkbox, before clicking the "OK" button. No error messages are displayed, absolutely nothing happens. I tried a set of combinations of projects and checkboxes + tabbing and using space to invoke the button. None of it works. Also tried repairing VS and restarting computer.

Any ideas?

UPDATE

I have tried to uninstall and reinstall Visual Studio, also tried disabling all extensions and removing ReSharper. Still no success. I read here that someone with the same issue had to use NetBeans (the horror), but solved it by reinstalling VS which does not seem to help in my case.

UPDATE 2

Using the Process Monitor, the only thing I can derive from VS2015 are success messages in finding the ASP.NET template.

UPDATE 3

Following Jims advice:

devenv /resetsettings
devenv /resetuserdata
devenv /installvstemplates

This now results in an error message:

Answer 1

You can try and reset the visual studio templates and settings.

devenv /resetsettings
devenv /resetuserdata
devenv /installvstemplates

These will restore all the settings to their defaults, and also importantly, reset all the project templates to their defaults.

Answer 2

It could be an issue with the GAC. This may be confirmed by this potentially related SO thread.

Please open the Developer Command Prompt as administrator and try running these commands:

gacutil -i "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\Microsoft\Web Tools\Publish\Microsoft.VisualStudio.Web.Publish.dll"

gacutil -i "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\Microsoft\Web Tools\Publish\Microsoft.VisualStudio.Web.Internal.Contracts.dll"

If you cannot find the DLLs in the paths I have given, please do a search in the various visual studio folders you have in Program Files until you find it, then update the path in the command above.