Issues may appear after a Marketing Cloud Connect update or after a sandbox refresh, including:
1. Click Setup.
2. Follow the steps based on your UI:
Salesforce Classic: Under the "Create" category, select Tabs.
Salesforce Lightning: Under the "User Interface" category, select Tabs.
3. Click New.
4. Choose "Configurations" from the Object drop-down menu.
5. Pick any Tab style.
6. Click Next | Next | Save.
1. Click the Plus symbol on the tab bar.
2. Click on the Configurations link.
3. Choose All under the "View" drop-down, and then click Go.
4. Delete the existing Configuration Object.
Note: Alternatively, you can also delete the existing Configuration Object via Developer Console by following these steps:
1. Navigate to the Developer Console.
2. Click Debug.
3. Open Execute Anonymous Window.
4. Paste in the following: et4ae5.SupportUtilities.resetConfiguration();
5. Click Execute.
6. The configuration is now available to be set up again.
>Please note that prior Marketing Cloud Connect Settings may be lost if you have previously established a connection. We highly recommend documenting or taking a screenshot of your current settings before making any changes. This precautionary step ensures you can restore your settings if necessary. After resetting your settings, you can refer to the 'Manage Marketing Cloud Connect Settings' article to guide you through the correct updating process.
For more information, visit Manage Marketing Cloud Connect Settings: https://help.salesforce.com/s/articleView?id=sf.mc_co_manage_settings.htm&type=5
Reconfigure Marketing Cloud Connect
1. Click the Marketing Cloud Tab.
2. Enter the Marketing Cloud API Username and Password.
3. Select values for Send Types, Target Audience, Exclusion Audience, Support Ticket Recipient, and Tracking Preferences.
4. Click Marketing Cloud Tab once more, re-integrate individual Users as needed.
For more details, visit: Enabling Tenant-Specific OAuth Endpoints for Marketing Cloud Connect - https://help.salesforce.com/s/articleView?id=000390168&type=1
"IO Exception: Unauthorized endpoint, please check Setup->Security->Remote site settings endpoint = {specific url}"
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