With the installation of the latest update on March 6, 2014, to Windows Live Mail Version 2012 (Build 16.4.3522.0110)) on my Sony Windows 7/64bit computer, the calendar associated with  Live Mail has stopped updating my new calendar entries to calendar.live.com.  Thus the new entries do not show up on my other computers (both Windows 7/64 bit) or on the web version of the calendar, although they remain on the Sony Windows 7 computer.  Conversely, items posted on the other computers or on my Apple mobile devices do post to the web version of the calendar, where they are picked up and update the calendar on the Sony Windows 7 computer (resulting in some double entries).  That is, the Sony Windows 7 computer can read and update from calendar.live.com but can not write to or update calendar.live.com.  Prior to the March 6 update to Live Mail, the calendar worked flawlessly across all devices.

I have use the Control Panel/Programs/Repair function to repair Window Essentials 2012 and have used the Fix It solution at:

http://support.microsoft.com/kb/2842520

Prior to March 6 I had happily used Windows Live Mail and its predecessors for years without serious incident.  My search of the Microsoft Support and Community sites seems to indicate that problems with Calendar updating have been around for years, with no endorsed solution from Microsoft. 

Help!  How do I fix this problem?

Thanks, Ron