Connect to Outlook button greyed out for select users

Hi All,

Some of our users are facing the issue where their Connect to Outlook button is greyed out on their SharePoint calendar. This is a classic list and they are on classic Outlook, with all the adequate permissions.

Myself and my colleagues are unable to replicate this, we are on both classic and new Outlook and the button is available. We have created accounts to mirror their permissions exactly and still can not replicate it.

Is Microsoft slowly removing this feature? It would be great to have some confirmation so we can confirm if this is an issue for us to resolve or if unfortunately there is nothing we can do about it.

Thanks!