During a Mail Sync, MAgE agent failed to sync few mailboxes using a specific Agent host and instance.
Error :System.InvalidCastException: Unable to cast COM object of type 'Quest.MigrationManager.Exchange.Interop.ConnProp.ConnPropsClass' to interface type 'Quest.MigrationManager.Exchange.Interop.ConnProp.IConnProps'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{33F5F305-D08A-4854-XXX-D06XXX211A}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
The actual cause was unknown, however, after a quick repair of the agent instance restores the Mail sync functionality.
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