Developers have reported that after applying the October 2015 CU, they are unable to follow content programmatically using SPSocialFollowingManager.Follow method. While reported for the October CU, the change appears to be from the September 2015 CU, thanks to an improved hybrid User Profile experience. The September 2015 CU added the option to follow on-premises Sites and have the followed Sites appear in the user’s SharePoint Online user profile. This is a great feature, but unfortunately broke the functionality. What has broken this functionality is . This method now contains the line . The method is calling , however is null. Because the service context is null, adding the followed item fails with the error: That said, there’s a workaround! What needs to be done is to properly set . If, within the scope of your custom code, is set (even through a console application), will not be null and an item can be followed.
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