I wanted to try an example here NFourierTransform, so copied the example and pasted it into my notebook in my PC.
I get a popup windows asking me to login to the Wolfram cloud. I did not want to do this at this time (I do not even know if I have an account there, I need to check). So I clicked cancel. But it will not go away.
I am also not able to use any other notebook and do anything with Mathematica now.
This does not sound right. One should be able to cancel a login screen without being stuck. Is this really how it is supposed to work? Any workaround?
This is Mathematica v 12 on windows 10 professional 64 bit OS.
Notice if you try it, make sure to SAVE all your notebooks, as there is no way out unless you login to the cloud first. I lost somework myself due to this, since only option I found is to terminate the whole Mathematica process from window.
Also killing the kernel process from windows does not help. I had to terminate the whole Mathematica process. Which tells me this is a front end problem.