# Error with Serial library

**URL:** https://discourse.processing.org/t/error-with-serial-library/47333
**Category:** Electronics (Arduino, etc.)
**Created:** [October 12, 2025, 7:57pm UTC](https://discourse.processing.org/t/error-with-serial-library/47333 "2025-10-12T19:57:35Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![unkient](https://avatars.discourse-cdn.com/v4/letter/u/7c8e57/32.png) [@unkient](https://discourse.processing.org/u/unkient)
#### Post date: [October 12, 2025, 7:57pm UTC](https://discourse.processing.org/t/error-with-serial-library/47333/1 "2025-10-12T19:57:35Z")

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Hello, friends!

I’ve got an error on my computer. When i’m trying to import serial library with this code:

“import processing.serial.\*;” processing gives me an error “The package “processing.serial” does not exist. You might be missing a library.”

What do I need to do programm with this library?

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### Author: ![quark](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/quark/32/26_2.png) [@quark](https://discourse.processing.org/u/quark)
#### Post date: [October 12, 2025, 8:09pm UTC](https://discourse.processing.org/t/error-with-serial-library/47333/2 "2025-10-12T20:09:32Z")

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Welcome to the forum. This [discussion](https://discourse.processing.org/t/serial-library-not-found-processing-4-4-8/47302/3) might help.

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### Author: ![Bua](https://avatars.discourse-cdn.com/v4/letter/b/87869e/32.png) [@Bua](https://discourse.processing.org/u/Bua)
#### Post date: [October 13, 2025, 5:18am UTC](https://discourse.processing.org/t/error-with-serial-library/47333/3 "2025-10-13T05:18:53Z")

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Hi,

I have also the problem with the serial-library… I download from github the serial library and copy it in the processing library folder it was named in the processing preferencies. But this was not the solution of the problem…

Is there anybody who has an idea, what can be the solution?

Thanks

Bua

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### Author: ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)
#### Post date: [October 13, 2025, 3:05pm UTC](https://discourse.processing.org/t/error-with-serial-library/47333/4 "2025-10-13T15:05:17Z")

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> [@Bua](#):
>
> Is there anybody who has an idea, what can be the solution?

This is continued here:

> [@Serial library not found - Processing 4.4.8](https://discourse.processing.org/t/serial-library-not-found-processing-4-4-8/47302/4):
>
> Oh Thanks, now these error is clear but a new one is in my window: The package “javax.xml.bind” does not exist. You might be missing a library. Is there also an solution for this error? Thanks