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We have WCS installed on a windows server and lately have noticed that WCS service stops all of a sudden without any intervention and needs a manual restart thereafter.
Is it common or a bug that's causing it or hw can it be addressed ?
This can be quite complex to troubleshoot. Usually this is an Apache crash of the webserver.
At first I recommend that you make sure you have the appropriate hardware and memory ressources on your server as per the release notes:
Then, it's important to find out what other applications are running on your server and, if you are in a vmware environment, make sure you have the appropriate ressources for your ESX host.
You can post your logs.zip from WCS and I can check what I can find in there.