Mi Pc Suite 2016-3-15 Version: Not Connecting

Apr 12, 2016
Hi All,
My Mi4 automatically upgraded from KitKat 4.4.4 to Marshmallow 6.0.1MMB29M and MIUI Stable. It is running smoothly and no battery problem 48 hrs.
But it is not connecting to Mi PC suite where I used it for update & backup etc.
Please help for a solution.