# .md files not being accepted by file search

**URL:** <https://community.openai.com/t/md-files-not-being-accepted-by-file-search/1361602>\
**Category:** Bugs\
**Tags:** prompt, file-search\
**Created:** [October 8, 2025, 7:07pm UTC](https://community.openai.com/t/md-files-not-being-accepted-by-file-search/1361602 "2025-10-08T19:07:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tyron](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/tyron/32/263197_2.png) [@tyron](https://community.openai.com/u/tyron)\
**Post date:** [October 8, 2025, 7:07pm UTC](https://community.openai.com/t/md-files-not-being-accepted-by-file-search/1361602/1 "2025-10-08T19:07:54Z")

</div>

Previously, these exact same .md files were being accepted by the File Search tool in a playground prompt I was working on. However, the next day when I tried uploading these same files into a new prompt they were rejected

 ![Screenshot 2025-10-08 at 12.07.23 PM](https://us1.discourse-cdn.com/openai1/original/4X/0/9/7/097e4acdcbc95871c051c9985c524974bc519d03.png)