RA-Portal user certificates for functional e-mail addresses are issued without a CN (Common Name). This makes it difficult to configure your digital signature in Outlook Trust Center if you use several (functional) e-mail addresses, as it is impossible to identify a corresponding certificate for a functional e-mail address.

To solve the problem, you can locally change the display name of the user certificate in the Windows certificate manager. Please note that this change does not affect the certificate content, it just changes how your certificate is displayed in the relevant windows applications using it.

Changing a display name of a certificate

1. Go to "Manage user certificates" (e.g. via Windows search).
2. Under My certificates → Certificates, select the certificate you are looking for and double-click to open it.
3. Go to the "General" tab → "Edit properties" and set the display name as required.
4. Confirm with "OK".

Selecting the correct certificate in Outlook

In Outlook Trust Center (File → Options → Trust Center), go to "Trust Center settings" and choose "E-mail security" → Settings. Then, "Select" the desired certificate for the e-mail address..

The user certificates are displayed with the following attributes

• Display name (if set) or common name (if available)
• Issuer
• Validity