My neighbour has had a problem with Windows Live Mail saying it can't iniatate Shared Canvas.  This has been raised on a Link under the Live Mail Forum see: http://answers.microsoft.com/en-us/windowslive/forum/livemail-sync/windows-live-mail-fails-to-initiate-shared-canvas/6a7a0d8c-d05c-41dc-894c-aeb54ca58f9a

I have followed the advice of 2 MVP and re-installed the latest Live Mail 2012.  I also ran an SFC repair and this said that there were some errors it couldn't fix.  This may be the problem.  I have saved these errors from the CBS file from the day I ran SFC.  They are on the public area of One Drive as GJM-CBS-29may15.log.   I had a feeling that it might be thay .NET was not correct.  Checked the version in the Registry Key NDP gives value v4.0.30319.  Says that 4.5.2 is installed which I believe is the latest.  I have spent about 3 to 4 hours trying to fix this problem that was caused by a Microsoft automatic update to Live Mail.  I really do need some help on this, and I don't want to have to pay Microsoft for an error that I believe was caused by them.  Can any one help me fix this Live Mail that is probably a Windows 7 problem.  The PC is running Windows 7 Home SP1 and is 64bit.  All the critical patches are installed.  Following the MVP advice I ran the Update Checker (HotFix KB947821) which runs wusa.exe and uses sur.exe.