No valid SMIME Certificate, but its valid (Windows)

Im using EM Client 7.2.35128.0 on Windows 10. I add my SMIME Cert from DGN without problems. When i want to use it, i get the error messsage “There is no valid certificate for user…)”.
The certificate is valid, the ca and root ca are importet and also valid. Thunderbird has no problem with this certifcate.

has anyone any idea ?

What happens when you upgrade to the latest version available in the Release History?

Thank you for the fast reply.
I installed the update to 7.2.36908.0 but the issue still exist.
Its interesting that it shows my certificate as “recipient”. But i am the sender and this certificate is not in “Others certificates/keys”

Ok, fixed it.
Importing the root and ca certificate in the Windows local machine certifcates storage did the trick.
Previously i installed them only in the current user certificates storage.