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.

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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.

  • $\begingroup$ Can you not go to Evaluation > Quit Kernel when this happens? $\endgroup$ – b3m2a1 May 9 at 5:44
  • $\begingroup$ @b3m2a1 no. That is the whole point. I can't do anything. Since the front end was locked completely. I can add this to the movie if you give me a minute. $\endgroup$ – Nasser May 9 at 5:48
  • $\begingroup$ Hm... seems to be a Windows issue. No problems quitting it on Mac. One sad thing about that chunk of code you tried to execute being the cause of the crash: it's literally just a wrapper on FourierSeries`NFourierTransform which is actually built in and doesn't need the cloud. $\endgroup$ – b3m2a1 May 9 at 5:50
  • $\begingroup$ @b3m2a1 fyi, I've just updated the movie. As you can see not possible to do what you said, since kernel is busy with the pop-up window and will not give me time to do anything else. $\endgroup$ – Nasser May 9 at 5:54
  • $\begingroup$ Seems like a bug to me. Have you asked WRI? $\endgroup$ – Carl Lange May 9 at 10:54

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