Endpoint Encryption

Upgraded to 2010 from 2007 exchange. Asking for a PGP passphrase.

Please explain where and when the PGP passphrase is being asked.  Please also quote the  passphrase request.

The user received the message when attempting to send an email after their mailbox was migrated from  Exchange 2007 to Exchange 2010.   

PFA : screenshot for the error message

Hello.  I work in the IT department for Ocean Spray Cranberries and will be the contact for this issue.  Please let me know if you have any other questions.

Thank you for your help.

Sounds like they are then needing their key's passphrase for decryption of incoming email, signing outgoing email, or because on the PGP Desktop Messaging module, the service Account Properties has set "cache this key's passphrase when I log in."

You need your key's passphrase for decryption of incoming email, signing outgoing email, or because on the PGP Desktop Messaging module, the service Account Properties has set "cache this key's passphrase when I log in."

Kindly reply back in the forum so that the engineer will be able to help you if you have any furthere queries or need steps to fix this.

Thank you.

Is there a way to determine what the passphrase is if the user does not remember it?

This Knowledge Base Article describes the only option for this.