Insert the below script into a notepad, amend bold text as required. Save as .bat file and deploy via group policy or run manually if you have a few machines. Test before applying to live environment.

MsiExec.exe /I \\path to momagent.msi /norestart /qn /l*v “%temp%\MOMReinstall.log” CONFIG_GROUP=”Default is ForefrontClientSecurity but amend if different” CONFIG_GROUP_OPERATION=”ModifyConfigGroup” MANAGEMENT_SERVER=”NEW MOM SERVER GOES HERE” AM_CONTROL=”Full” REQUIRE_AUTH_COMMN=1 REINSTALL=”ALL”

If mom agent control is not FULL (AM_CONTROL=”Full”), please amend. Mine were set to full.