Why do I receive License Manager Error 400?

I recently had a  trial and have now purchased and installed a license.

When I start MATLAB I am prompted to log in and then get the following error:

 

License Manager Error 400

License checkout failed.

License Manager Error 400

The license you requested has expired.

 

How can I resolve this error?

Answer 1

[MathWorks Support Team]

This error indicates that your MATLAB installation was not properly converted from the trial to your new license.

The issue can be resolved by removing the XML file that MATLAB uses to determine whether it should prompt you to log in.

The file is located in a folder named "R20XXx_licenses", where "R20XXx" is the release of MATLAB (e.g. R2015a).

 

Windows:

C:\Users\%USERNAME%\AppData\Roaming\MathWorks\MATLAB\R20XXx_licenses\license_info.xml

 

Linux / Mac:

~/.matlab/R20XXx_licenses/license_info.xml

To find the folder on a Mac:

- Open Finder

- On the Apple menu bar, click on "Go"

- Select "Go to Folder"

- In the text box, enter the following:

~/.matlab

- Click on "Go"

[Ricardo Pachon]

What about for a Mac? Have the same problem.

[Shawn Lyons]

The folder location is the same on Mac (it is a UNIX based system)

(In OS X, open Finder, then select 'Go' on the taskbar, then select 'Go to Folder'. Enter ~/.matlab into the field, then press Go.)

Look for the R2015a_licenses directory, or whichever release version you have installed.

I have updated this article to contain this information. Thanks for commenting.

-Shawn MathWorks Support

[Dana Wensberg]

worked, thanks

[JOÃO CARLOS PROCOPIO FLORENCIO]

I have exactly the same problem, but in my "...Roaming/MATLAB" folder I have only the "R2015a" folder. Didn't find "<Release>_licenses" folder, so I couldn't this file to remove. What do can I do now?

[in ivanov]

i have this problem...,when i remove XML file and choose licenece, but there is only one(trial),it writes me this: Error 1.731: Activations are not allowed when License Management is set to MathWorks hosted license manager

thank you!

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/195328-why-do-i-receive-error-1-731-when-activating-matlab-parallel-server-products

Answer 2

[Karen A]

I have a MAC, and I followed the steps and work!

Thanks!

Answer 3

[sukur altuntas]

Thank you :) It's working now on mac.

Answer 4

[farida menisy]

I have a windows, but i can't find the XML file

[kesh bheekharry]

I got the same problem , were you able to solve it ?

[JOÃO CARLOS PROCOPIO FLORENCIO]

I have the same problem too.

[Scott]

If you are unable to locate your XML file, please contact MathWorks support:

https://www.mathworks.com/support/contact_us.html

-Scott

MathWorks Installation & Licensing Support