Upgrading from SEP 14RU1 to 14RU1 MP1 breaks the functionality of DCS Agent 6.7 Agent

DCS Agent drivers and IPS,IDS,Util services are not loaded on rebooting machine after SEP upgrade:

Agent drivers are not loaded and IPS feature is not working:
C:\Users\Administrator.DC2016>sc query sisipsdriver
[SC] EnumQueryServicesStatus:OpenService FAILED 1060: The specified service does not exist as an installed service.

During SEP upgrade, some registry entries belonging to DCS Agent are removed by SEP installer.

Workaround (to avoid problem):

Before upgrading SEP Client, you need to edit the package to remove a feature set. In the SEPM Console, go to Admin -> Client Install Feature Set :

Create a new feature set (Or edit a custom one) and unselect "Application Hardening". Save your feature set and use it in creating/exporting packages.

Solution (if issue occured):

Only option is to uninstall DCS and then re-install DCS. (The repair function will not work)