I was having an issue getting KB2863911 (Outlook update) into SCCM from WSUS. I went through the WSUS Sync log and finally found out that it's not syncing because it's being told it's superseded. That's cool and all, but Microsoft's site (http://support.microsoft.com/kb/2863911) doesn't list it as being so, and I'm not sure what I need to apply to fix the issue. We are about to come to a screeching halt on our Exchange Online migration until I get this figured out. I hope someone has been in this boat before.

