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Synchronization Error: "Interface not supported"


Log contains this error:

--- [HASH: B98EBF17A6743362CEB2D1C971A2A4FE] ---
Synchronization failed
System.Runtime.InteropServices.COMException (0x8000FFFF): Interface not supported
  v Redemption.IRDOSession.set_MAPIOBJECT(Object Value)
  v eWay.Core.OutlookAccess.Application.InitializeRedemptionObjects()
  v eWay.Core.OutlookAccess.Application..ctor(Application application)
  v eWay.Core.OutlookAccess.OutlookApplicationManager.get_Instance()
  v eWay.Core.Synchronization.SynchronizeThread.SynchronizeObjectTypes()
  v eWay.Core.Synchronization.SynchronizeThread.CreateDatabaseStructure()


All versions of eWay-CRM




  1. Go to Control Panel and select the Uninstall a program or Programs and Features (depending on the version of your Microsoft Windows).
  2. In the list of programs, select Microsoft Office.
  3. Right-click the item and select Change (or select Change in the top menu).

  1. Choose the Repair option in the new window and confirm your choice.

If you are using Microsoft Office 365, you need to select Online Repair. Quick Repair will not resolve this issue.

  1. After the repair is done, restart your computer.