Hello @Ho, Keith D , I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.
Issue: "Message: Invalid request. Inner error: { "code": "InvalidContent", "message": "The file is corrupted or format is unsupported. Refer to documentation for the list of supported formats." }"
Solution: Upgrading the Python azure-ai-formrecognizer package to version 3.3.2 resolved.
Additionally, please refer to the table that explains the support of the input requirements.
Make sure you use the right model and the API version that support this PPTX document.
If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.
Regards,
Vasavi
Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.