Everyone keeps mentioning KIX32.EXE but if you want it to go silently you need to use WKIX32.EXE (well you could hide KIX32.EXE with some policies maybe but WKIX32.EXE is designed to be silently used)

Just place WKIX32.EXE in the netlogon folder and use it


WKIX32.EXE LOGIN.KIX