It might take up to 24 hours for this change to take effect across all services. Be sure to tell the user about this change. ...

It might take up to 24 hours for this change to take effect across all services. Be sure to tell the user about this change. They will be prompted to sign in with their updated user ID. If they use %BRAND_LYNC_ONLINE_SHORT%, they have to reschedule any %BRAND_LYNC_ONLINE_SHORT% meetings and tell their external contacts to update the old contact.Are you sure you want to make this change?