# Changelog: Video SDK - Linux - 2.5.5

**URL:** <https://devforum.zoom.us/t/changelog-video-sdk-linux-2-5-5/142725>\
**Category:** video-sdk\
**Created:** [April 1, 2026, 11:10pm UTC](https://devforum.zoom.us/t/changelog-video-sdk-linux-2-5-5/142725 "2026-04-01T23:10:29Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [April 1, 2026, 11:10pm UTC](https://devforum.zoom.us/t/changelog-video-sdk-linux-2-5-5/142725/1 "2026-04-01T23:10:29Z")

</div>

Released: 2026-03-26 Updated: 2026-08-26

[Visit Changelog](https://developers.zoom.us/changelog/video-sdk/linux/2.5.5)

Summary: Adds detailed QoS statistics for Web SDK consistency, multi-language telephony “welcome” messages, and AI-friendly API documentation. It establishes Ubuntu 20 as the new minimum for Linux support. Additionally, a breaking change ensures that the cleanup function returns a specific error code when called during an active session.

## Important notes

- Starting from version 2.5.5, the Linux SDK only supports Ubuntu 20 (u20) and later.
- AI-Friendly Documentation
  - This SDK release ships AI-friendly API documentation in a structured, machine-readable format to help developers and AI-assisted workflows discover and understand the Zoom Video SDK public APIs faster. For more information, see [Using AI assistants with the Video SDK](https://devforum.zoom.us/docs/video-sdk/ai-docs/).

## Breaking Changes

- Add new error code for the `cleanup` function to return `ZoomVideoSDKErrors_Cannot_Call_Cleanup_In_Session` when it’s called during a session.
  - New enum in `ZoomVideoSDKErrors`.

```auto
typedef enum
{
  ......
  ZoomVideoSDKErrors_Cannot_Call_Cleanup_In_Session = 7700,
}ZoomVideoSDKErrors;

```

## Added

- New user QoS statistics data to be consistent with web SDK.

- Add support for multiple languages versions of telephony “welcome” message.