Hi Magnus,
On Android 11 and later, apps need special “All Files Access” permission to browse arbitrary files, but Edge does not request this permission for privacy reasons. Instead, it uses Android’s Storage Access Framework (SAF), which should open the system file picker. If the site uses a custom upload script, Edge cannot handle it and shows the “No access” error. Edge does not appear in the “All Files Access” list because only apps that declare MANAGE_EXTERNAL_STORAGE in their manifest are shown, and Edge does not include that permission. You can report this issue directly from Edge via Menu > Settings > Help & Feedback > Send Feedback. For more details, you can check these official resources: Microsoft Edge for mobile FAQs https://support.microsoft.com/en-us/microsoft-edge/microsoft-edge-for-mobile-faqs-29296eab-b76f-4a87-ac9c-9835da53465d.