Why do I receive "(MLM) Not master server, checkout attempt of 'MATLAB' from user@host refused" in the license manager log file?
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MathWorks Support Team
on 19 Jul 2017
Answered: MathWorks Support Team
on 19 Jul 2017
Clients are reporting they receive License Manager Error -18 when they try to start MATLAB, and I am seeing errors in the log file. Why do I receive "(MLM) Not master server, checkout attempt of 'MATLAB' from user@host refused" in the license manager log file?
Accepted Answer
MathWorks Support Team
on 19 Jul 2017
This error message indicates the DAEMON line is not formatted correctly. Possible errors include placing the quotations that normally surround the MLM path around additional parts of the DAEMON line. For example, if a static port number is being used, the following line would be incorrectly formatted and would cause this error:
DAEMON MLM "C:\Program Files\MATLAB\R201Xx\etc\win64\mlm.exe port=27001"
Instead, the line should move the quotation to only surround the MLM path:
DAEMON MLM "C:\Program Files\MATLAB\R201Xx\etc\win64\mlm.exe" port=27001
Clients will receive License Manager Error -18 when this error is written to the log file. If you are unable to resolve the error, please contact MathWorks Licensing and Installation Support, including your license file for analysis.
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