Clients communicating with SEPM but not updating in the SEPM.

Hello - I recently updated all my PCs to the newest version 4013.  Ever since the update - the PCs are communicating with the SEPM (meaning the green dot is lit), the PCs are getting updated but not reporting as updated in the SEPM (which is causing my reports to be way off).   See attachment.  Screen prints - the first print is from the SEPM reporting the virus defs date as April 18th.  but the 2nd screen print from the actual PC itself shows current defs.

How do i fix this?

thanks