It seems that when creating a new Azure Function using the V2 template, when pressing start debugging on the new project it fails with:
A fatal error has occurred and debugging needs to be terminated. For more details please see the Microsoft Help and Support web site. HRESULT=0x8000ffff. ErrorCode=0x0.
I have tried on a couple of machines running different builds of Visual Studio 2017 including the very latest 15.8.9. Is this a known issue?
Edit: It looks like this is an issue per this issue on GitHub: https://github.com/Azure/Azure-Functions/issues/1012