A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Thank you for reaching out to the Microsoft Q&A forum.
To better understand your situation, may I clarify the following questions?
1/ Could you share more details about the error code you see when trying to upload a file in PowerPoint for Mac? If possible, please share a screenshot through private message.
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2/ Does this behavior also occur when you use Microsoft PowerPoint on the web?
3/ Does it happen with a specific file or with all files?
4/ Did the behavior start after updating Microsoft PowerPoint or after making any configuration changes on your device?
In the meantime, you may try uninstalling PowerPoint and then installing the latest updater.pkg from the following official source to see if it helps: Update history for Office for Mac - Office release notes | Microsoft Learn
Since your question is tagged under “For education,” if you prefer support directly from the Microsoft Support Team, please consider contacting your school’s IT administrator. They can help you open a support ticket through the Microsoft Admin Center: Get support - Microsoft 365 admin | Microsoft Learn or reach Microsoft Support by phone: Customer service phone numbers - Microsoft Support
If you have any updates, please feel free to share them with me. I would truly appreciate it.
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