MATLAB Answers


License Manager Error -9

Asked by Graham Spicer on 5 Oct 2015
Latest activity Commented on by Walter Roberson
on 6 Feb 2019
How do I run the activation client to reactivate my license? Error message below:
License checkout failed. License Manager Error -9 Your username does not match the username in the license file. To run MATLAB on this computer, you must run the Activation client to reactivate your license.
When I initially activated the software, it would only let me activate using my username from the other workstation I use the software from. How do I activate with my username for this personal laptop in addition to my office workstation?
Thank you!


dandan xue on 26 Jan 2018
your username must written as your computer user name.By default,you can written can search your user name on the user accout at computer c disk.
How can I change the username if I have already put it in wrong?
Walter Roberson
on 6 Feb 2019
Leah, you can re-run activation.

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4 Answers

Answer by Walter Roberson
on 5 Oct 2015
 Accepted Answer

Standalone Named User is, if I understand correctly, essentially locked to the username. If you have different user names on different computers then as it will consider them to be different users, as otherwise the "name" control would be meaningless. (Otherwise if you gave the key to me, I could just say "Yup, I'm Graham!" no matter that my username has nothing to do with "Graham".)
The licenses that allow different usernames on different computers to access under the same license are the Network Floating License, especially with a GROUP option configured to restrict them to a subset of potential users.

  1 Comment

This makes sense; although it is strange to me since I was able to use both computers for the first year or so of the license, then I started getting the license manager error. I am wondering if there was a change along the line to the licensing or if there was just a bug that needed fixing.

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Answer by Luigia Merlo on 5 Dec 2016

And have you solved this problem? If yes can somebody tell me how. Thank you

  1 Comment

Image Analyst
on 5 Dec 2016
Yes, it's been solved. See my answer immediately above. It's in the FAQ.

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Answer by chen jack on 15 Dec 2017

so?how did you solve this question?and how did you do?can you carefully talk about it?


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