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pkabirrvelixo
Iron Contributor
Apr 24, 2023
Status:
New

Cross-origin isolation not available for add-ins in Excel Online

We were considering using SharedArrayBuffer for certain optimisations in our add-in.

However, it seems that strict cross-origin isolation is required for that to work. https://web.dev/coop-coep/

 

globalThis.crossOriginIsolated returns true in Excel Desktop for Windows, but it returns false in Excel Online.

 

Can you please support it in Excel Online? This seems to be the future of the secure web.

 

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