Just upgraded to Reckon Accounts 2017 (from 2016) and am having the same issues with emails since going to win 10. Previous versions I have been able to use the workaround of Running both Outlook and QB32 as administrator and emails have been working fine but with 2017 it appears to be a dead end. Trying to run as administrator I get the message that file couldn't be found and wont open but running as std user and the file opens fine. It just cannot email invoices, quotes etc. Anyone encountered this and have any idea how to overcome this ? It looks like I will need to run all systems back on 2016 for now until we can get 2017 working.