SCCM 2012 - Some Client Computers Receive Deployed Applications, but never Install them
I have a strange issue with clients in our SCCM 2012 Environment. Only some computers are affected. If I deploy software (any type - program, application, package, etc) the troubled machines will either show status in the monitoring section of Config Manager as "Program Received" or "No Messages have been Received". I have confirmed that these client computers are active on the network, they are in the appropriate collection for these deployments, deployments are required, MP is OK (as most of the clients get the same deployments and install them successfully).
The troubled PCs will have status in the ConfigMgr as active, healthy, client = YES. However, I noticed that the harware inventory never gets updated, last logon stamp shows way old information. At the same time I have confirmed on the troubled client computers that SCEP definition updates are successfully installed from the SCCM deploment Server, not from Microsoft Directly.
Any Help is much appreciated, as I am not sure of what exactly causes such issue with only some clients on the network.