Just yesterday we let you know about a problem with KB3002657 that caused issues with several applications running on Windows Server 2003. The problem caused applications like Exchange, SharePoint, and SQL to stop authenticating. The issue affected a small portion of customers, but the breadth of the problem was large enough for Microsoft to deliver a quick fix.
The fix is now available and the Security Bulletin has been updated to reflect the identified issue:
To address a connectivity issue with update 3002657 when installed on supported editions of Windows Server 2003, Microsoft released update 3002657-v2 for all supported editions of Windows Server 2003. Customers who have not already installed the 3002657 update should install update 3002657-v2 to be fully protected from this vulnerability. To avoid the possibility of future detection logic problems, Microsoft recommends that customers running Windows Server 2003 who have already successfully installed the 3002657 update also apply update 3002657-v2 even though they are already protected from this vulnerability.
KB Article: KB3002657
Updated Security bulletin: MS15-027