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"syms", "sym", and "mupad" functions cause MATLAB to freeze

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Why does MATLAB hang when I try to use the "syms", "sym", or "mupad" functions?
It causes MATLAB to run indefinitely, the system freezes and memory usage increases.
Sometimes errors also appear:
Error using mupadmex
Internal error with symbolic engine. Quit and restart MATLAB.
Error in symengine
Error in sym (line 185)
symengine;

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 4 Jun 2018
Edited: MathWorks Support Team on 4 Jun 2018
This is a known bug that exists in certain Windows 10 builds. It has been fixed as of MATLAB R2018a Update 1 and MATLAB R2017b Update 7.
Here is the bug report below for more information:
As far as we know, only MATLAB R2017b and R2018a are affected. Older releases are not affected by the Windows 10 Spring 2018 update.
  9 Comments
Laura Hild
Laura Hild on 10 Aug 2018
If you are still having issues after following the instructions in the EBR linked above, please contact Technical Support.

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More Answers (2)

Syed Riza
Syed Riza on 5 Jun 2018
Thank you very much for the updates. Sticking in the middle of programs was very annoying.

Derrick Gao
Derrick Gao on 15 Jun 2018
So bad !!!!!!!!!!It takes me one night to find the reason !!!!!!!!!!!!!!and forced to restrat my laptop many times

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