When opening an email message using the PGP Viewer and then try to use the Copy to Inbox button to copy the message to the Outlook Inbox, you receive the following error message.
"The message could not be copied to you inbox. Make sure that you have configured a default email client"
This occurs when Microsoft Outlook is not set as a default email client (e.g. you have set Outlook Express as default) on a Windows computer or if Outlook is not installed on you computer. This error also appears if you have a 64bit Version of Outlook installed. PGP Viewer is a 32bit application and is thus only compatible with a 32bit Outlook installation. (Meaning it can not integrate in the 64bit MAPI subsystem)
Make sure that Outlook 32bit is installed and that no other email clients are being used which are not supported by PGP Desktop.
Make sure that Outlook is set as the default email client.