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Matlab doesn't open (it's installed and activated)

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Abhimanyu Talwar
Abhimanyu Talwar on 20 Mar 2019
Answered: NN on 9 Jun 2021
I'm on a Windows 10 machine. I had a well functioning Matlab 2018a installed and then suddenly it stopped working. When I try to open Matlab, it shows up in my Task Manager but the software just doesn't open.
I uninstalled 2018a, downloaded and installed 2018b and activated it, but it still shows the same behavior.
Can someone please help me? I've wasted hours of effort on this and can't make it work.

Accepted Answer

Kojiro Saito
Kojiro Saito on 20 Mar 2019
Edited: Kojiro Saito on 14 Oct 2019
It might be because MATLAB's prefdir is corrupted.
Please delete the following folders (previous prefdir)
  • C:\Users\YOUR_USER_NAME\AppData\Roaming\MathWorks\MATLAB\R2018a
  • C:\Users\YOUR_USER_NAME\AppData\Roaming\MathWorks\MATLAB\R2018a_licenses
  • C:\Users\YOUR_USER_NAME\AppData\Roaming\MathWorks\MATLAB\R2018b
  • C:\Users\YOUR_USER_NAME\AppData\Roaming\MathWorks\MATLAB\R2018b_licenses
and launch MATLAB R2018b again.

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More Answers (4)

NN on 9 Jun 2021
I am facing teh same problem, but i couldnt find the APP data folder




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