# Upload .msg, .xlsx, and .xls files to AgentOS without workarounds

> Resolved an issue where .msg, .xlsx, and .xls files were not recognized on upload due to missing MIME type mappings. These file types now upload correctly without requiring manual workarounds.

- Published: 2026-04-09
- Author: Agno Team
- Category: Changelog
- Canonical: https://agno-com-nine.vercel.app/articles/upload-msg-xlsx-and-xls-files-to-agentos-without-workarounds
- Markdown: https://agno-com-nine.vercel.app/articles/upload-msg-xlsx-and-xls-files-to-agentos-without-workarounds.md

Resolved an issue where `.msg`, `.xlsx`, and `.xls` files were not recognized on upload due to missing MIME type mappings. These file types now upload correctly without requiring manual workarounds.