Should we complete rebasing before applying the CDO patch?

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Q: Our users have had the OS DST patch applied and are running the Outlook Update tool thru the login script. Over 4,000 have been completed. However, the Exchange Server DST patch has not yet been applied. Do we wait for the rebasing to complete?
A: Yes, the recommended guidance is to complete rebasing before applying the CDO update (KB 926666) to the Exchange server.