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Byrne Reese posted

Cannot create webhook: "Extension permission [HUD] is missing"

If you are trying to subscribe to a presence webhook and are receiving the following error:

     "message":"Extension permission [HUD] is missing"

Well, the good news is that there is a solution. The bad news is that only a RingCentral support representative is able to help you to resolve it. Reach out to support, and ask for help with "increasing the maximum number of monitored extensions."

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Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys



ByrneReese contributed to this article