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Why am I continuously prompted to activate when I try to launch MATLAB?

I am trying to activate and use MATLAB. Every time I start MATLAB, it asks me to activate, even though I complete the process and it states activation is complete each time. Why am I continuously prompted to activate when I try to launch MATLAB?

Products


Release

R2008a

6 Answers

Answer by MathWorks Support Team on 31 Jul 2019 at 4:00
Edited by MathWorks Support Team on 31 Jul 2019 at 19:34
 Accepted Answer

The most common reason that MATLAB will continuously prompt you for activation is that due to limited user permissions, administrator credentials were used to activate. As a result the license file is stored under the administrator account.
You must have permission to access the license folders to resolve this issue. Individual licenses, these files are placed in a folder specific to your Login Name on the system. License files for all other license types are located in the licenses folder within the MATLAB installation directory.
See the appropriate section for your license type and operating system to access the directory where your license files are stored.
If the license folders are empty, then the MATLAB activation client wrote license file to another account. To resolve the issue, activate MATLAB manually through the License Center using the instructions in the following article.
How do I activate MATLAB without an internet connection?
Then place the license file in the following locations depending on your license type:
Designated Computer, Concurrent, Network Named User
*Windows: *C:\Program Files\MATLAB\R20XXx\licenses
Mac: License files are stored inside the MATLAB application package.
Right click, CTRL-click, or two-finger click on the MATLAB icon in your Applications folder and select "Show Package Contents."
In the folder that opens up, open the "licenses" folder to see your license files.
*Linux: */usr/local/MATLAB/R20XXx/licenses
If you have an Individual license type, or DO NOT have write permissions to the directories above, place the license file in these directories.
*Windows: *%AppData%\MathWorks\MATLAB\R20XXx_licenses
Mac: /Users/$USER/Library/Application Support/MathWorks/MATLAB/
Linux: ~/.matlab/R20XXx_licenses

  9 Comments

This did not work for my Linux CentOS installation. I deleted the license file and went through the activation procedure, which generated a new license file. When I started Matlab, the activation window came up again.
I also tried the -c option for starting MATLAB and pointed toward the license file. In that case, I got the following error.
Licensing error: -1,379.
Looking up errors -1 and 379 didn't result in any solutions either.
Hi,
If you are still experiencing this issue, please contact MathWorks support:
-Justin

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Answer by soxib abduxalilov on 20 May 2018

I am trying to activate and use MATLAB. Every time I start MATLAB, it asks me to activate, even though I complete the process and it states activation is complete each time. Why am I continuously prompted to activate when I try to launch MATLAB?

  1 Comment

You might need to Run As Administrator once.
If that does not work, contact Mathworks for free installation assistance.

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Answer by Torbjörn Widhe on 11 Oct 2016

If you are running R2016a with floating licens and redundant servers there is a bug causing this, see
for details and solution.

  0 Comments

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Answer by Tech Support on 13 Apr 2018

Hi,
If you are still experiencing this issue, please contact MathWorks support:
-Justin

  0 Comments

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Answer by durga sadasivuni on 26 Jun 2018

I am trying to activate and use MATLAB trial. Every time I start MATLAB, it asks me to activate, even though I done with all the process and it states activation is complete each time.Even I did every process mentioned above still getting the same problem. Why am I continuously prompted to activate when I try to launch MATLAB,please help me out

  3 Comments

Contact Mathworks for free installation assistance.
Same issue - just wanted to update from 2017b to 2018a but now I cant work at all. Tried as Administrator, online and manual activation with file. Help please I cant do my Project.
Richard, the volunteers who answer questions here do not have access to the license database and do not have access to your system. We are also not trained on the various ways to investigate this problem. It is recommended that you contact Mathworks for free installation assistance.

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Answer by Seungyoun Lee on 2 Jul 2019
Edited by Seungyoun Lee on 2 Jul 2019

They do not want to resolve customer's problem. Why matlab developers did not try to solve the problems? Why? Is it customer's problem? or Matlab's fault?

  2 Comments

This is happening because the licence of that particular MATLAB has expired. One can get a new licenced version of MATLAB.
Seungyoun Lee: what leads you to understand that "they do not want to resolve customer's problem" ? Mathworks actively updates the response here to add information, clarify, and rephrase for better understanding.
Mathworks offers free support for installation problems.

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