This issue should have been clarified to all users before they updated ERA instead of nonchalantly stating it should be installed on the Remote Administrator Server in the Setup Guide.
Anyway this is what we used to Push the Hotfix:
hxxp://itaudiotech.blogspot.com/2013/05/how-to-deploy-microsoft-hotfixes.html
some of the details are wrong but it works. Setup for x86 and x64 if needed. Creates long initial boot times and requires 3 reboots, 1) deploy variable, 2) install update, 3) reboot after update installed. Suppose you can push before variable and eliminate one reboot.
After the Hotfix is installed do this command from Powershell to verify installation of fix:
PS x:\> get-hotfix -id kb2664888