No more activations are available for this user. You may need to deactivate a previously activated computer before you can activate this computer. See Solution 1-6379G9 for more details.

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I have only 2 computer running Matlab, both PCs. Want to install it on my new Apple Mac Pro but error above appears. I had it previously installed on my two sons Apple Mac notebooks to learn them Matlab but removed it due to lack of interest from their side.
Is it limited to 2 computer installations ? Previously I had 3 installations. Could be that the user name should be exactly the same as in the previous installations?
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Suryadiputra Liawatimena
Suryadiputra Liawatimena on 17 Jun 2019
Unfortunately, matlab at my notebook different license number, so I can not deactivate it on my notebook. My installation on my ubuntu machine also get
You may need to deactivate a previously activated computer before you can activate this computer. See Solution 1-6379G9 for more details.
Please help. Thank you.

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Answers (2)

Steven Lord
Steven Lord on 17 Jun 2019
See this Answer from MathWorks Support Team. It describes how to deactivate a license even if you don't have the computer on which the license was previously activated.

Shkelqim Kuka
Shkelqim Kuka on 19 Oct 2021
how to deactivate license on my older pc and activate on new

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