Hi @Gianpaolo
Glad to hear this issue has been resolved!
Thanks for the sharing.
However, due to a recent update in forum policy, the question author now is not able to accept their own answers.
So I have written a brief summary of the solution this issue. Please feel free to accept it as the answer, which would benefit others who also has similar issues in forum.
[New Outlook: no more read attachment on PEC Account beacuse of S/MIME]
Issue:
I'm receiving emails with S/MIME on my PEC ARUBA Account in New Outlook and I cannot read them Because of S/MIME.
Solution:
I discovered the problem is only wit the Inbox folder. The solution is to create e TMP Folder, move the email to this folder and open it. All attachment now are visible.