No one has responded to this discussion for at least a year, so this information may be out of date. If you're looking for information about this topic, please search for a more recent discussion or post a new question.

Exchange Federation

This question is not answered This question is not answered

Are there any guides available for configuring Exchange federation in order to open the Office 365 portal through the local Exchange 2010 EMC? I have found a few technet articles, listed below but continue to run into issues.

Basically I am able to run through the shell commands, but when I actually try to configure federation I get an error about Validation.



All Replies
  • Hello,

    I would suggest looking into the Exchange Deployment Assistant site and choose coexistence for the step by step guidance. Please let me know if you any questions.



  • Thanks Nima,

    Unfortunately the assistant says 'Exchange 2010 - Coming Soon' so no information for what I am trying to do. Any other thoughts?

  • Hi Jorge, the Exchange 2010 does say "Coming Soon" HOWEVER the 2003 or 2007 both have the steps needed to use an On-Premises 2010 server, so I would look into either of these and they WILL provide the steps and information needed to get you going!

  • Ryan,

    Thanks, I'll check out the 2003 page to see if I can find what I am looking for. Just an FYI, the 2007 does still say Coming soon as well:


  • Hi Jorge,

    In order to connect on-premises Exchange 2010 EMC to Exchange Online, you need first deploy Directory synchronization and single sign-on. This link ( gives you detailed steps to accomplish this. Directory Synchronization is not needed for Exchange Federation Organization to Organization sharing but is only required when federating between an on-premises environment and the Office 365 environment. The Online Help cmdlet reference at (
    is also provided for you.

    Best regards,