Hi,
Did this problem appear in all PowerPoint files with embedded Excel Workbook?
Did you try to create a simple sample and check if this issue is still existed?
Excel or PowerPoint is only backward compatible. The lower version of PowerPoint and Excel cannot open the table inserted by the high version of Excel.
I suggest you check if this is the reason of your problem, just checking in to see if the information was helpful. Please let us know if you would like further assistance.
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