ChatGPT Keeps Failing to Read Uploaded Excel Files, Users Forced Back to Screenshots
real4money · reddit · 2026-09-21
A Reddit user reports a persistent ChatGPT file-upload bug: their daily multi-tab Excel journal worked fine for months, but since late August ChatGPT repeatedly claims the uploaded workbook "isn't mounted" or accessible, even after clean re-uploads and freshly rebuilt files — often self-correcting to admit it's an access problem on its side. The user still relies on screenshots as a workaround and asks whether this is a known bug OpenAI is addressing.
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