Hi @Ben Woodman
If the file type is
.doc, you can open it directly in Edge. You can navigate to
edge://settings/downloads and turn on Open Office files in the browser, then doc file can be opened automatically without downloading.
For now, if it's not an Office file, you can't open it without downloading in Edge. I suggest that you can provide your feedback about your demands to Edge team by pressing Alt+Shift+I in Edge. They will check the feedback and improve the product continuously. Thanks for your understanding.
Besides, if you can accept storing the download files in temp folder and deleting them regularly, you can refer to ¡Firedog's solution in this page.
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