Why can I not validate my Amazon Cloud cluster profile?

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When trying to validate my Amazon Cloud cluster profile, I receive an error on the first validation stage:
Failed to establish a connection to cluster 'MyCluster'.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 26 Mar 2019
Edited: MathWorks Support Team on 26 Mar 2019
To fix the above error, you may potentially have to take several steps.
Firstly, make sure that your version of MATLAB and the version of the MATLAB Parallel Server that is running on the Amazon Cloud are the same release - the error is misleading, but release missmatch could be the issue.
To check what version your installation of MATLAB is, run the below in the MATLAB command window:
ver
To check what version your MATLAB Parallel Server cluster is, log into your Amazon cloud account(www.mathworks.com/cloudcenter) and click on your cluster name. After doing that, click on "More Details" and you can see the MATLAB Version in the drop down.
NOTE: Starting in R2019a the following name changes occurred: * MATLAB Distributed Computing Server was renamed to MATLAB Parallel Server * mdce_def was renamed to mjs_def * mdce binary was renamed to mjs

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