I am attempting to import a simple spreadsheet into a SharePoint Online list. I am receiving an error message "Unexpected Error" . The website is on my internet explorer trusted list. I have tried to save the spreadsheet to a 97-2003 format as well as the current format, with no improvement. When I attempt to use Edge, I receive a message that I need to use a browser which supports active X. I also opened up a new sheet and pasted values only, no formatting or formulas, no improvement.
thank you.