Message Service fatally disconnected

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YUKI GOYA
YUKI GOYA 2020 年 4 月 1 日
コメント済み: Amin Salehi 2021 年 4 月 6 日
hi,
I am recently seeing the following error popup while running my code in MATLAB R2019b.
JavaScript Alert - https://localhost:31515
Message Service fatally disconnected.
it happens randomly and i would like to know what could be the cause of it and how to fix it.
I never had this issue while running R2014b and it suddenly started when I switched to R2019b. My computer is running under Windows 10 pro (build 1909).
thank you in advance.
yuki
  5 件のコメント
Amin Salehi
Amin Salehi 2021 年 4 月 6 日
Same here, following, MacOS Big Sir

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回答 (1 件)

Patrik Forssén
Patrik Forssén 2020 年 11 月 12 日
Got this error also and (local) help-pages stoped working. Not even reinstallation of MATLAB (R2020a, Win 10) helped to resolve the issue.
Seems to be a problem with corrupt preferences. After deleting the preferences directory, and reinstallation, help worked again with no error messages (so far). Type
prefdir
in the MATLAB command window, exit MATLAB and delete the preferences directory (WARNING! all your custom settings will be lost). I do not think reinstallation is actually necessary after that, just re-starting MATLAB should be sufficent.
After you have set your custom preferences again you might want to exit MATLAB and save a backup copy of the preferences directory so you can replace it if you experience similar problems again.

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R2019b

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