Why does MATLAB Web App Server fail to start with ""Exception setting up connector: No such host is known." error in the webapps_se​rvice_star​t.err log?

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MathWorks Support Team
MathWorks Support Team on 5 Apr 2023
Edited: MathWorks Support Team on 30 Dec 2025 at 20:31
MATLAB Web App Server fails to start with "Exception setting up connector: No such host is known." in the webapps_service_start.err log file. I am able to setup the Web App Server, and I confirmed that licensing is correct and the Network License Manager is up and running. 

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Accepted Answer

MathWorks Support Team
MathWorks Support Team about 21 hours ago
Edited: MathWorks Support Team 2 minutes ago
The "Exception setting up connector: No such host is known" indicates an issue with the server's DNS configuration.
Verify the DNS is available and resolving correctly. Once the DNS issue is resolved, try to start MATLAB Web App Server again.
 

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