We use Microsoft's System Center Configuration Manager 2007 (SCCM) to deploy our software packages to our workstations along with updates for things like Reader, Acrobat, Flash, Java, Silverlight, etc. We are in the process of testing Endpoint Antivirus (v5.0.2122.1) and have found that the Web Access Protection module is interfering with the HTTP SCCM communication between the client and the SCCM server. SCCM uses HTTP for many of its communications and deploying packages that will be installed on the client. In testing we have found that if the Web Access Protection is enabled, SCCM is able to discover and install the client on the workstation but all software deployment is blocked with HTTP errors in the SCCM logs. Disabling the Web Access Protection in Endpoint Antivirus solves the problem and the packages are deployed with no errors. We have 150 computers right now on SCCM with version 4.2.76 and we have never had any issues deploying packages due to ESET. Please let me know if you need any other logs or any other information to hopefully solve this problem as we cannot deploy v5 until this is resolved.