Hi,
It sounds like on Windows you have a 'self-service' package installed - that is to say the Desktop Application has 'elevated privileges' allowing it to install and update applications, even where you do not have the relevant Admin rights. On the mac, you may have a different package, one that does not grant those rights. The solution would be to have your IT Admin build and deploy to you a self-service CC package.
See https://helpx.adobe.com/enterprise/using/create-nul-packages.html
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