while opening Matlab I am getting error 5201 which is unable to communicate MathWorks services

I have tired many times to resolve this issue but still facing same issue, even tried for another verions still same and this issue started on 30th april 2025. please humble request resolve this issue, I need this very urgent case, I have also tried many times for reinstalling , still same.

please contact me on this email [e-mail] or [e-mail]

[Walter Roberson]

You should contact Mathworks support, [e-mail] or phone them or start a support case

[Durgesh]

okay, I will call them just tell me are they availabe for 24*7?

[Walter Roberson]

The main US customer support is

Customer Support (Monday-Friday)

Hours: 08:30-20:00 ET (that is, Eastern time, currently Eastern Daylight Time)

Answer 1

[Gayathri]

Hi @Durgesh,

This error indicates that MATLAB has encountered a licensing issue. To resolve this error, try these possible solutions:

1. This error can occur if you are using an unqualified Operating System. To view the qualified Operating Systems, please refer to https://www.mathworks.com/support/requirements/matlab-linux.html
2. If MATLAB is running, shut it down and restart it to see if that resolves the issue.
3. If the previous possible solutions do not resolve your issue, try reinstalling the MathWorks Service Host. Follow the instructions in https://www.mathworks.com/matlabcentral/answers/1815365-how-do-i-uninstall-and-reinstall-the-mathworks-service-host
4. If you have any antivirus, security software, VPNs, or proxy servers, try adding an exception to unblock the MathWorks Service Host. The name of the executable varies by operating system, as shown below. Windows - "MathWorksServiceHost.exe", macOS - "MathWorksServiceHost.app", Linux - "MathWorksServiceHost"
5. Check your operating system for updates, and then download and install those updates.
6. If MATLAB has Full Disk Access, remove its Full Disk Access permissions and restart MATLAB. If this does not resolve the issue, you may grant MATLAB Full Disk Access again to see if this resolves the issue. (macOS only)

Also refer to the below link which talks about resolving connection errors.

https://www.mathworks.com/matlabcentral/answers/92634-why-do-i-get-a-connection-error-when-installing-or-activating-matlab-or-other-mathworks-products

Hope the above solutions help in resolving the issue!!

[Walter Roberson]

error 5201 is not a licensing issue !

Removing Full Disk Access has a very low chance of solving the problem; adding missing Full Disk Access has a higher chance of solving the problem.