License Manager Error -25 in installation of MATLAB2020b on individul license

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mohammad dehghani
mohammad dehghani 2020-11-16
回答： Monisha Nalluru 2020-11-19
I download MATLAB 2020b and installed it. But, when I want to open it I see this error: License checkout failed. License manager error -25.
By folloing my account > license > install and activate > Activate to Retrieve License Fil , I download the license,lic file and pasted it in the Appdata > Roaming > Mathwork > MATLAB > R2020b
But still I can not open the Matlab.
What is the problem?
I have MATLAB2020a version on the PC as well. So may be it confused between 2 different licenses of MATLAB2020a and MATLAB2020b.

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回答（1 个）

Monisha Nalluru
Monisha Nalluru 2020-11-19
"License Manager Error -25" occurs when you try to start a version of MATLAB that is newer than the version of the license.dat file on the license server.
To resolve this issue, update the license.dat file on the server to the latest release that you are licensed for.
Inorder to update the license file in license server, Refer the following answer
The license.dat file on the server machine is located in:
$MATLABROOT/etc
where $MATLABROOT is MATLAB installation directory
NOTE: Once you have made changes to your license file, be sure to restart the network license manager for these changes to take effect

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