
Hi @catmanjan ,
Unfortunately, WebDAV has been deprecated so it is not recommended. For users needing to open PDF files from through WebDAV, we can use Adobe Reader or Microsoft Word. Alternatively, users can copy the file to their local disk and open it from there.
For this particular problem of "Not allowed to load local resource", we suggest you send feedback in Microsoft Edge at ··· menu --> Help and feedback --> Send feedback to provide more information to the Dev Team. Thank you for your understanding.
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Best Regards,
Shijie Li