# Chromebook Error : PThread is undefined

**URL:** <https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184>\
**Category:** Meeting SDK\
**Created:** [February 19, 2024, 11:11pm UTC](https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184 "2024-02-19T23:11:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![emedina.engineer](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@emedina.engineer](https://devforum.zoom.us/u/emedina.engineer)\
**Post date:** [February 19, 2024, 11:11pm UTC](https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184/1 "2024-02-19T23:11:09Z")

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### Before Creating a New Topic:

Previously searched the forum and found post with the same error but no resolution or response was posted.

> [@"ReferenceError: PThread is not defined" in Chromebooks](https://devforum.zoom.us/t/referenceerror-pthread-is-not-defined-in-chromebooks/93258):
>
> Description Hello, our users have been encountering this error when they try to use the web SDK on their Chromebook. Unfortunately, I cannot test this myself as I do not have access to a Chromebook. I’d be happy to know if there are any workarounds you can suggest, or if this is already known and a fix is on the way. Browser Console Error ReferenceError: PThread is not defined Which Web Meeting SDK version? 2.13.0, client view Meeting SDK Code Snippets const { ZoomMtg } = window; ZoomMt…

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### Format Your New Topic as Follows:

**Meeting SDK Type and Version** : @zoomus/websdk 2.17.0

**Description**  
All of our Chromebook users are experiencing application crashes when trying to start video. The error being thrown is “PThread is undefined” only upon video start. The rest of the functionality seems in tact.

**Error?**  
“PThread is undefined” thrown when video is started

## **Troubleshooting Routes**

**How To Reproduce**  
Start a video session in chromebook from app using the web sdk

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<div class="post-metadata">

**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [February 20, 2024, 9:55pm UTC](https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184/2 "2024-02-20T21:55:16Z")

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Thank you for posting in the Zoom Developer Forum! Are you experiencing this issue with the latest version of the Web SDK? I noticed that you’re using an older version, @zoomus/websdk 2.17.0.

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<div class="post-metadata">

**Author:** ![emedina.engineer](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@emedina.engineer](https://devforum.zoom.us/u/emedina.engineer)\
**Post date:** [February 20, 2024, 11:00pm UTC](https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184/3 "2024-02-20T23:00:06Z")

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We have not tried the latest version  
Is there a fix in 2.18.0 and above for this exact issue?

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**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [February 21, 2024, 1:03am UTC](https://devforum.zoom.us/t/chromebook-error-pthread-is-undefined/104184/4 "2024-02-21T01:03:03Z")

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The latest version of the SDK is 3.1.6. There have been multiple bug fixes since version 2.17.0. I recommend testing with the latest version to see if the same behavior persists.