V11 SP8
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Disabling MAPI Over HTTP

Applies to: Office 365 with Exchange, User Mailbox

Office 365 with Exchange backups require RPC over HTTP. You must disable MAPI over HTTP before you configure accounts for Office 365 with Exchange.

Procedure

  1. Log on to the proxy client where you installed the agent.

    Use the credentials for the Windows account that you defined in the agent properties.

  2. In Windows on the client computer, click Start, and then type regedit in the Search programs and files box.
  3. Press Enter.

    The Registry Editor appears.

  4. Expand HKEY_CURRENT_USER > Software > Microsoft > Exchange.
  5. Right-click Exchange, and then click New > DWORD.

    A new DWORD entry appears in the right pane.

  6. Right-click the new DWORD entry, and then click Rename.
  7. Type MapiHttpDisabled.
  8. Right-click the MapiHttpDisabled entry, and then click Modify.

    The Edit DWORD Value dialog box appears.

  9. In the Value box, type 00000001, and then click OK.
  10. Close the Registry Editor.
  11. Verify that the protocol has been changed to RPC over HTTP.
    1. Restart Microsoft Outlook.
    2. Press Ctrl and right-click the Microsoft Outlook icon in the notification area at the far right of the task bar.
    3. Click Connection Status.

      The Microsoft Exchange Connection Status dialog box appears.

    4. Verify that the value in the Protocol column is RPC/HTTP.
    5. If the value is HTTP, delete the Microsoft Outlook profile, and then recreate it.
  12. Note: Make sure to use the same Office 365 with Exchange (Exchange Online) service account name for the new profile and disable cache mode.