Why do I receive License Manager Error -16?

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When starting the network license manager or starting MATLAB I receive the following error:
Cannot read data from license server. License Manager Error -16.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 31 Aug 2022
Edited: MathWorks Support Team on 31 Aug 2022
This error will occur if the path to MLM in your license file is incorrect. To resolve this error, open the license.dat file with a plain text editor and correct the path to MLM.
Where $MATLAB is the MATLAB installation directory, the license.dat file on the server machine is located in:
$MATLAB/etc
The DAEMON line specifies the daemon type and the path to the daemon. For MATLAB, this is:
DAEMON MLM <path to vendor daemon>
The location of the daemon depends on your operating system.
 
Windows
The daemon will normally be located here:
$MATLAB\etc\win64\mlm.exe
Linux
The daemon will normally be located here:
$MATLAB/etc/glnxa64/mlm
Mac
$MATLAB/etc/maci64/mlm
Once you have made the changes to the license file, you must stop and start the network license manager. (Do not reread the license file: reread is not supported by the MATLAB vendor daemon.) For more information on stopping and starting the license manager, please see How do I start or stop the MathWorks Network License Manager?

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