Forecast storm force winds mean it is no longer safe to play the match at Hive Stadium, Scottish Gas Murrayfield or any other suitable venue throughout Scotland.
Ulster supporters who have travelled to Edinburgh this weekend, please take care and stay safe on your journey home. We will share further details from the URC once the rescheduled fixture has been confirmed.
The URC said it will now consider available dates with broadcasters and both clubs to reschedule the game.