C
ChrisDoe
Guest
We have a very strange problem occurring for one of our users.
S/MIME encrypted messages that are sent (from Outlook 2019) to their mailbox and viewed in Outlook 2019 can not be decrypted.
Decryption fails with the error message "...The digital ID can not be found..." but the correct certificate has been imported into the correct certificate store (it works for over 500 other users) and it contains the private key.
The public part of the certificate is published through Active Directory userCertificate attribute.
Encrypted emails that are sent from their Outlook can later be viewed inside the "Sent items" folder (they are encrypted and decryption works), but afaik this is encrypted with the same key that other users are using. After another user answers one such message with an encrypted message, the answer can not be decrypted (same error as before).
We already tried re-importing the certificate multiple times, starting Outlook in SafeMode, deleting the private key through Powershell/.NET, creating a completely new Outlook profile and reinstalling the Office 2019 Suite, no success.
We have already generated a new certificate and switched to a different machine, the problem persists. There are no special characters in the users name or mail address.
I'm kinda out of ideas now so I am posting here to see if anyone encountered something like this before.
Kind regards
Chris
Continue reading...
S/MIME encrypted messages that are sent (from Outlook 2019) to their mailbox and viewed in Outlook 2019 can not be decrypted.
Decryption fails with the error message "...The digital ID can not be found..." but the correct certificate has been imported into the correct certificate store (it works for over 500 other users) and it contains the private key.
The public part of the certificate is published through Active Directory userCertificate attribute.
Encrypted emails that are sent from their Outlook can later be viewed inside the "Sent items" folder (they are encrypted and decryption works), but afaik this is encrypted with the same key that other users are using. After another user answers one such message with an encrypted message, the answer can not be decrypted (same error as before).
We already tried re-importing the certificate multiple times, starting Outlook in SafeMode, deleting the private key through Powershell/.NET, creating a completely new Outlook profile and reinstalling the Office 2019 Suite, no success.
We have already generated a new certificate and switched to a different machine, the problem persists. There are no special characters in the users name or mail address.
I'm kinda out of ideas now so I am posting here to see if anyone encountered something like this before.
Kind regards
Chris
Continue reading...