Tweet There is a problem with Client Push installation in Microsoft System Center Configuration Manager 2012 SP1. One of the prerequisites, MicrosoftPolicyPlatformSetup.msi, which comes during the ccmsetup installation is digitally signed and the signature expired on 10-01-2012. Therefore Client Installation cannot be performed! Following error will appear in the ccmsetup.log: c:\windows\ccmsetup\logs\ccmsetup.log: Couldn’t verify ‘C:\Windows\ccmsetup\MicrosoftPolicyPlatformSetup.msi’ authenticode ...