Since the UI isn't behaving, you can disable this through the Metadata API with the EmailIntegrationSettings metadata type.
The field you're interested in is enableContactAndEventSync
. This'll return true
assuming Lightning sync is actually activated and preventing you from activating Einstein Activity Capture.
Within VS Code (or whichever deployment means you'd like), retrieve with the following package.xml
<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>EmailIntegration</members>
<name>Settings</name>
</types>
<version>52.0</version>
</Package>
This'll create a Settings
folder wtihin your project (if you've never pulled anything in before).
Change enableContactAndEventSync
to false
within the EmailIntegrationSettings
file, re-deploy, and this should deactivate Lightning Sync. Thus, allowing you to go through the EAC setup within the UI.
Setup --> Outlook Integration & Sync
, are you able to turn off lightning sync?EmailIntegrationSettings
in the Metadata API. You can retrieve (using workbench or VS code) with the package.xml identified here. I presumeenableContactAndEventSync
will betrue
on retrieve. Change that tofalse
and deploy.enableContactAndEventSync
was true. Einstein Activity Capture now works. Thank you. If you'd like to post your answer, I'd be happy to accept.