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MMicrooft 365 Excel cant open a file and I need to update my browser. As far as I know it is version 143 & current

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I get this from Microsoft 365 excel when opening an .xlsx file: "Unsupported Browser Office uses new browser technology and works best in the latest browsers. Please upgrade your browser"

Why?

I get this from Microsoft 365 excel when opening an .xlsx file: "Unsupported Browser Office uses new browser technology and works best in the latest browsers. Please upgrade your browser" Why?

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