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dan_jjjj
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Joined 6 years ago
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Re: Enable AD Connect sync with existing Office 365 accounts and mailbox
When I try this, I get an AttributeValueMustBeUnique error when it tries to syncronize for the new user since the UserPrincipalName is not unique. I followed the guide on this page... https://support.microsoft.com/en-us/help/2641663/use-smtp-matching-to-match-on-premises-user-accounts-to-office-365 Do you know how to get around this? p.s. Sorry for posting on an old thread. It was one of only a few that I could find that directly discusses AD Connect to an existing 365 company. Thanks
