I am not sure I understand. What is the behavior you are expecting. What it sounds like to me, is that you are enabling sleep mode which essentially disables all NVDA interactions for that application unless I am completely mistaken. But you are expecting that browse mode should still work while NVDA is sleeping. Are you perhaps wanting to turn off voice output but continue working with Braille Or perhaps you are doing accessibility testing in which case you should listen to the great tutorial DeQueue created on using NVDA to test accessibility with NVDA that is available on YouTube. Best Wishes,