Hello

I need to sign email messages using my citizem card.
The digital signature works weel with MS word, Adobe Acrobat and other programs.
In outlook 2016 I select File/Options/trust center. I select Definitions and eMail security and again definitions.
I give a name and when I try to chose my electronic certificate the Outlook reports "The Outlook stops to work".
What could be wrong?

Windows 10, 64 bits
Office 2016

Thanks by your help

José Carmo Silva