I've been stuck for days on an issue I can't figure out. I don't even know where to start but I first noticed ASP.NET errors (7.png) in my SCCM's event viewer.. hundreds of them. I read a bunch of articles which basically said to increase the private memory limit in my WSUS application pool (which I did) but the errors continued. I changed a bunch of timeout errors in the same app pool as well since the error message relates to an http timeout. Ultimately, my SUP can sync from SCCM . I can see clients finding the WSUS server and I can see in WCM.log and wsyncmgr.log that there are no errors and SCCM can connect properly to WSUS. However, on the clients.. I see (A2.png) that the WUAgent failed to scan. I'm not sure what to check and I am out of answers.