Matlab R2019b gets stuck and is not responding when open in macOS 10.15.4

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Li Hang 2020-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/514048-matlab-r2019b-gets-stuck-and-is-not-responding-when-open-in-macos-10-15-4

评论： Bowen Song 2020-10-7

I update macOS to 10.15.4 but when I open the Matlab R2019b, it gets stuck and becomes no responding all the time.

Is there any compatibility problems between R2019b and 10.15.4?

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Bhargavi Maganuru 2020-4-2

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https://ww2.mathworks.cn/matlabcentral/answers/514048-matlab-r2019b-gets-stuck-and-is-not-responding-when-open-in-macos-10-15-4#answer_423518

MATLAB R2019b support MacOS Catalina. There are few incompatibilities when running MATLAB on macOS Catalina. For more details follow the link https://www.mathworks.com/matlabcentral/answers/489700-is-matlab-compatible-with-macos-catalina

I also confirm the stuck problem. It seems the stuck occurs very frequently on macOS10.15.4 with MATLAB 2020a and also 2019b. The freeze usually lasts seconds to even a minute. Then it comes to normal.

Mickey London 2020-4-14

Same here. Since the latest update of catalina to 10.15.4 its non-responsive to a degree it is impossible to work

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Bhargavi Maganuru 2020-4-28

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https://ww2.mathworks.cn/matlabcentral/answers/514048-matlab-r2019b-gets-stuck-and-is-not-responding-when-open-in-macos-10-15-4#answer_428820

There is an issue with the way Accessibility features work on macOS with MATLAB at this time.

You can follow these steps:

Go to System Preferences > Security & Privacy > Privacy > Accessibility. This list shows all the applications that you've given permission to use the Accessibility API. One of these applications is triggering the bug in MATLAB and causing it to hang.
You'll need to use a process of elimination to determine which application is preventing MATLAB from starting. It is likely to be an app that gets and sets information about other application windows.

For additional information, you can check the following ML Answer post:https://www.mathworks.com/matlabcentral/answers/480796-not-responding-on-startup-macos-mojave#answer_398840