I am having problems creating and viewing Entity forms.
This happened to me in one of our environments, and then resolved itself.
In my new environment, I can't create/view any forms. I tried 4 browsers and cleared my local cache.
My colleague [we have the same permissions] had the same issue and then it eventually resolved itself. I am still in the state where I cannot access the forms.
Any ideas would be appreciated?
I get challenged when I try to create or view a form. Once I click "Sign-in" a pop-up login screen appears and then disappears.

I see a spinner for awhile and then I see a 'Check Access; message.
