Format of the Exchange object version is wrong when you connect to Exchange Online in EMC

Original KB number:   3143722

Problem

When you try to connect to Exchange Online through the Exchange Management Console (EMC) in Microsoft Exchange Server 2010, you receive the following error message:

The following error occurred while attempting to connect to the specified Exchange server 'PS.Outlook.com'

The format of the Exchange object version is wrong
Parameter name: ExchangeBuild

This problem causes the following conditions to occur:

  • You can't run the Hybrid Configuration Wizard that's included in the EMC.
  • You can't view the properties of recipients in Exchange Online from the EMC. (You can still manage recipients in the EMC, but you can't view the properties of the recipients.)

Workaround

To work around this problem, do one or both of the following, as appropriate for your situation:

  • Run the Microsoft 365 Hybrid Configuration Wizard.
  • To view the recipient properties for mailboxes in an environment that has directory synchronization enabled, use the Exchange admin center in Exchange Online or use Exchange Online PowerShell.

More information

For more information about using the Microsoft 365 Hybrid Configuration wizard in Exchange 2010, see Microsoft 365 Hybrid Configuration wizard for Exchange 2010.

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