# UXP version in older apps

**URL:** <https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514>\
**Category:** InDesign\
**Created:** [February 20, 2025, 8:59pm UTC](https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514 "2025-02-20T20:59:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Roland\_Dreger](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/roland_dreger/32/3702_2.png) [@Roland\_Dreger](https://forums.creativeclouddeveloper.com/u/Roland_Dreger)\
**Post date:** [February 20, 2025, 8:59pm UTC](https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514/1 "2025-02-20T20:59:54Z")

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Hello everyone,

a basic question: In older applications, is UXP not updated to the current version? I.e. fixed bugs in UXP are not fixed there either. Does anyone know this?

 ![Bildschirmfoto 2025-02-20 um 21.54.19](https://us1.discourse-cdn.com/flex015/uploads/xdplugins/original/2X/a/a806d564e1217a41b4d097a07d7bede14664f8d5.png)

Both versions of lnDesign are up to date.

Thanks a lot!  
Roland

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**Author:** ![dspice](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/dspice/32/3668_2.png) [@dspice](https://forums.creativeclouddeveloper.com/u/dspice)\
**Post date:** [February 21, 2025, 11:43am UTC](https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514/2 "2025-02-21T11:43:52Z")

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AFAIK UXP is a fundamental “part” of InDesign, like with CEP and is not updated separately. I suppose critical bugs are fixed (hence why 7.4.2 rather than 7.4.0 of 7.4.1 in InDesign 19.5.2) but new features would be linked exclusively to the newest InDesign version.

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**Author:** ![Roland\_Dreger](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/roland_dreger/32/3702_2.png) [@Roland\_Dreger](https://forums.creativeclouddeveloper.com/u/Roland_Dreger)\
**Post date:** [February 21, 2025, 11:59am UTC](https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514/3 "2025-02-21T11:59:01Z")

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Thank you for your answer. I’m currently struggling against a bug with sp-textfields. Same code, works in InDesign 2025 but not in 2024. The Spectrum web components in particular should actually be independent. So I suspect it has something to do with the UXP version.

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**Author:** ![dspice](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/dspice/32/3668_2.png) [@dspice](https://forums.creativeclouddeveloper.com/u/dspice)\
**Post date:** [February 21, 2025, 12:06pm UTC](https://forums.creativeclouddeveloper.com/t/uxp-version-in-older-apps/9514/4 "2025-02-21T12:06:10Z")

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While the SWC’s are separate indeed, they do under the hood rely on the capabilities of the UXP html/css translation/rendering engine which is updated and enhanced constantly. Compare it to websites which might render correctly on a newer but not older version of your browser… same applies here, only InDesign is the “browser”