# Screen sharing doesn't share audio from child processes

**URL:** <https://devforum.zoom.us/t/screen-sharing-doesnt-share-audio-from-child-processes/75348>\
**Category:** Windows\
**Created:** [September 2, 2022, 3:21pm UTC](https://devforum.zoom.us/t/screen-sharing-doesnt-share-audio-from-child-processes/75348 "2022-09-02T15:21:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jonskeet](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jonskeet/32/8028_2.png) [@jonskeet](https://devforum.zoom.us/u/jonskeet)\
**Post date:** [September 2, 2022, 3:21pm UTC](https://devforum.zoom.us/t/screen-sharing-doesnt-share-audio-from-child-processes/75348/1 "2022-09-02T15:21:09Z")

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**Description**

I recently upgraded my Zoom SDK version from 5.7.6.1079 to 5.11.4.7235. My app is a Windows WPF app written in C#. Part of the functionality is to share videos, which is achieved by launching VLC, then starting screen sharing. This has always worked fine.

Last night, I found that the audio wasn’t sharing properly. The audio was coming through my local speakers fine, but wasn’t being shared. More details in troubleshooting.

**Which Windows Meeting SDK version?**

5.7.6.1079 and 5.11.4.7235 - having downgraded from 5.11.4.7235 back to 5.7.6.1079, the same issue came up. So I don’t think it’s actually an SDK upgrade issue - but I wonder whether in changing SDK version, some setting changed.

**Troubleshooting Routes**

It looks like the problem is caused by VLC being a child process of my SDK app.

If I launch VLC manually while sharing the screen, the audio is fine.

If I launch VLC via a “trampoline” (where I launch one process which does nothing but launch VLC in the same way) the audio is fine.

If I launch VLC directly as a child process, its audio is not shared. (It’s audible locally, but not shared.)

I can’t find anything in the audio or screen sharing settings that would affect this.

To reiterate: this used not to be a problem, on the same system. I don’t know what’s changed. I can use the “trampoline” idea as a workaround for now, but I’d really like to understand what’s going on. Does the Zoom SDK deliberately try to “ignore” audio from its own child processes, and is there a way of disabling that behavior?

**Device (please complete the following information):**

- Device: SurfaceBook 2
- OS: Windows 11

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**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:** [October 3, 2022, 1:21am UTC](https://devforum.zoom.us/t/screen-sharing-doesnt-share-audio-from-child-processes/75348/2 "2022-10-03T01:21:37Z")

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Closed on October 3, 2022, 1:21am UTC

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