Symptoms
You have a Lync contact who has less than 1000 followers. The contact’s presence status is not displayed when you’re using a Lync client in a Lync Server 2013 environment. Additionally, the contact card of that contact contains the following message:
Maximum Followers Reached
Cause
This issue occurs because the entries for the contact in the rtcdyn.dbo.RemoteSubscriber and the rtcdyn.dbo.CategorySubscription databases were not deleted when the followers signed out. Therefore, the number of the entries accumulates and reaches the maximum 1000 incorrectly.
Resolution
To resolve this issue, install the following cumulative update:
2987510 September 2014 Cumulative Update 5.0.8308.815 for Lync Server 2013 (Front End Server and Edge Server)