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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.

enter image description here

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.

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  • $\begingroup$ 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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