Hi Norman,
Thank you for contacting us. I'll wait to see if other users respond, but I did want to chime in to let you know that we haven't been receiving requests about sync issues since the 2004 update. We do receive requests about sync issues occasionally, of course, but none that I know of can be traced back specifically to the latest Windows update.
Norman
Anyone else having a sync issue since the 2004 update to Windows 10?