Workaround 1
In the Configuration Console | Advanced Settings.
Add the following key.
Enable Delegate View Message
Set the value of this key to 1
Workaround 2
In the Configuration Console | Advanced Settings.
Check for this Key
LinkEmbeddedMessages LastUSN
If the key has a blank value set the value to 0
Close the Configuration Console.
On the SQL Server with the Archive Manager database open SQL Management Studio | SQL Server Agent | Jobs
Look for a job called "Mailbox Maintenance - Link Embedded Messages - ArchiveManager" and then right click on the job and choose the option "Start Job at Step"
Once the job finishes running try opening your message again.
