# Getting error code 100000401 while retrying to pair room without activation token

**URL:** <https://devforum.zoom.us/t/getting-error-code-100000401-while-retrying-to-pair-room-without-activation-token/143243>\
**Category:** Meeting SDK\
**Created:** [April 29, 2026, 11:55am UTC](https://devforum.zoom.us/t/getting-error-code-100000401-while-retrying-to-pair-room-without-activation-token/143243 "2026-04-29T11:55:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tanish](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tanish/32/54890_2.png) [@Tanish](https://devforum.zoom.us/u/Tanish)\
**Post date:** [April 29, 2026, 11:55am UTC](https://devforum.zoom.us/t/getting-error-code-100000401-while-retrying-to-pair-room-without-activation-token/143243/1 "2026-04-29T11:55:39Z")

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I’m using the Zoom Room Controller SDK (C++) to control a Zoom Room, but I’m facing a couple of issues:

- After pairing successfully, the room sometimes gets unpaired automatically without any callback. I only realize this when I call a function and it returns result code 11 (which means not paired).
- To fix this, I call RetryToPairRoom(). Sometimes the pairing works, but other times it returns error code 100000401.
- In this error state, if I operate the Zoom Room using the native controller, I receive all the callbacks properly. However, when I try to perform any operation through the SDK, it still returns result code 11 (not paired).

So my main problems are:

1. Why does the pairing break automatically without any callback, if something like logs file or other are required from my side please let me know?
2. Why does re-pairing without an activation token sometimes return 100000401, and even after that, why do operations still fail with result code 11 despite receiving callbacks?

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<div class="post-metadata">

**Author:** ![Tanish](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tanish/32/54890_2.png) [@Tanish](https://devforum.zoom.us/u/Tanish)\
**Post date:** [May 4, 2026, 1:28pm UTC](https://devforum.zoom.us/t/getting-error-code-100000401-while-retrying-to-pair-room-without-activation-token/143243/2 "2026-05-04T13:28:31Z")

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if anyone has faced this or knows the cause/solution, please help.

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<div class="post-metadata">

**Author:** ![Tanish](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tanish/32/54890_2.png) [@Tanish](https://devforum.zoom.us/u/Tanish)\
**Post date:** [May 25, 2026, 9:48am UTC](https://devforum.zoom.us/t/getting-error-code-100000401-while-retrying-to-pair-room-without-activation-token/143243/3 "2026-05-25T09:48:12Z")

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if anyone has faced this or knows the cause/solution, please help to resolve it.