Windows Live Mail works fine on initial opening in 10, but if I close it down after I use it and reopen later, nothing happens. The little whirly think signifying loading spins for about 5 seconds then stops.  Tried right clicking on icon and opening it there, same thing.  Only way, so far is to reboot 10.  Fresh install of 10 this morning overtop of 7.

Not too many issues so far though.  Still got some drivers to go through etc.