Hi,
We are testing S-MIME mail encrypting in our organization. One user can't open others users e-mails if message is encrypted. When he try to open it in Outlook 2013 - user gets error "Sorry, we're having trouble opening this item. This could be temporary, but if you see it again might want to restart Outlook. Your Digital ID name cannot be found by underlying security system". If user try to open same message in another PC with Outlook 2010 it opens successfully. From what point i can start to investigate this problem ? Or maybe you know solution ? :)
Thanks