Why do I receive MathWorks Licensing Error 16?

Why do I receive the following error:

MathWorks Licensing Error 16

A licensing error occurred while trying to use <PRODUCTNAME>.

Unable to communicate with your organization's license server

Answer 1

[MathWorks Support Team]

This error occurs when the vendor daemon, MLM, is unable to communicate with the Network License Manager, lmgrd.

To resolve this issue, ensure the following:

• The path to MLM in the Network License Manager's license file is correct
• The TCP port used by MLM is unblocked
• Antivirus and security software are not preventing MLM from running
• Firewalls using deep packet inspection (such as with Zscaler) are not blocking License Manager traffic even if network tests pass; try allowing all traffic or disabling deep packet inspection to resolve the issue.

If you're unsure which port MLM is using and would like to set a static port, please visit the MATLAB Answer below.

What ports does the Network License Manager use, and how can I set those ports?

https://www.mathworks.com/matlabcentral/answers/96756