When activating 2015b on Mac OS 10.11.2 I get a notice that It did not activate because I can't write the activation key to disk. What do I need to do.

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Richard Hansen 2015-12-12

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I retried the installation and activation. Still got same notice at the CONFIRM button, i.e., user cannot write to disk so activation did not occur.

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Answer 1

Rene van Paassen 2016-12-29

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Had the same issue today. The license key is written in the following location

/Applications/MATLAB_R2015b.app/licenses

The permissions of that location were

bash-3.2# ls -ld licenses
drwxr-xr-x  3 31689  admin  102 29 Dec 23:40 licenses

That means that the license key cannot be written, except (in my case) by user 31689 (which does not exist?). If your user id is also administrator, writing will succeed after the permissions have been corrected. If you are comfortable with the command line, open a shell, and type:

cd /Applications/MATLAB_R2015b.app
sudo chmod g+w licenses

After this the key could be written.

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Walter Roberson 2016-12-30

If you install an individual R2015b license on OS-X then it will be written into the directory ~/.matlab/R2015b_licenses/ relative to the user's home directory (e.g., /Users/roberson/.matlab/R2015b_licenses/ )