# Error no cross section.xml file was specified

**URL:** <https://openmc.discourse.group/t/error-no-cross-section-xml-file-was-specified/2397>\
**Category:** User Support\
**Created:** [October 27, 2022, 5:53pm UTC](https://openmc.discourse.group/t/error-no-cross-section-xml-file-was-specified/2397 "2022-10-27T17:53:25Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Shimwell](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/shimwell/32/3876_2.png) [@Shimwell](https://openmc.discourse.group/u/Shimwell)\
**Post date:** [November 1, 2022, 4:20pm UTC](https://openmc.discourse.group/t/error-no-cross-section-xml-file-was-specified/2397/8 "2022-11-01T16:20:16Z")

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Just to mention that issue got solved over in another thread with this comment [Could not find nuclide U235 - #8 by Shimwell](https://openmc.discourse.group/t/could-not-find-nuclide-u235/2410/8)

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_[View the full topic](https://openmc.discourse.group/t/error-no-cross-section-xml-file-was-specified/2397)._