Answer to number of questions  on why I am unable to sync Windows Live Mail in Windows 10:

 My email server is POP3

 I am using Windows Live Mail 2012 and it is my primary account

 Problem is I have attempted to sync WLM  with Windows 10 Mail App on new laptop.

 Most of time I get "not yet synced"  on one occasion there was an error code: 0X8007274C.  

 Thanks again for help from anyone!!!!!