When you’ve got a server-based Sharepoint integration with Dynamics 365 you only see the “Enable Server-Based SharePoint Integration” button at the first time you are setting up the integration.
This looks like you can only set-up the integration only once, but in a rare situation you have to set it up again because of:
- You’ve got a new SharePoint environment;
- Your SharePoint Realm ID has changed.
You can return the integration button by deactivating your active SharePoint Sites by clicking on the below button and select your sites and deactivate them.
This will return your integration button and you can fill in a new SharePoint Realm ID.