We have had our SCCM 2012 environment up and running for well over a year with little to no issues. We have always installed the clients manually when the computers were provisioned. Recently, we are finding that the agent installs, in the console it shows up as Client=Yes, Site Code=Correct Code, Client Activity=Active, and Approved=Approved. However, the clients are not receiving advertised applications and if you check the Configuration Manager section in the Control Panel, there are only 2 actions available and some tabs seem to be missing. I have been looking at every forum post on the internet for the past 3 days trying to figure this one out and i'm hoping someone here will have ran into this before or have some thoughts on it. Thanks for any help!