A licensing error occur while trying to use MATLAB, Your username is not authorized to use this license why do i receive Error -9?

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Rushikesh on 1 Jul 2025

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https://uk.mathworks.com/matlabcentral/answers/2178185-a-licensing-error-occur-while-trying-to-use-matlab-your-username-is-not-authorized-to-use-this-lice

Edited: Jacob Mathew on 2 Jul 2025

To resolve this issue how to re-activate license?

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Jacob Mathew on 2 Jul 2025

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https://uk.mathworks.com/matlabcentral/answers/2178185-a-licensing-error-occur-while-trying-to-use-matlab-your-username-is-not-authorized-to-use-this-lice#answer_1567471

Edited: Jacob Mathew on 2 Jul 2025

Hey @Rushikesh,

The following MATLAB Answers post by MathWork's official support staff goes into detail on what "Error -9" is and how to resolve it:

https://www.mathworks.com/matlabcentral/answers/99067-why-do-i-receive-mathworks-licensing-error-9

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