icloud bookmarks for edge browser
i notice Microsoft Edge browser is not supported in the Icloud synch app. Why
You aren’t likely to get an answer to the “why” question on this website. I’d assume its because iCloud Sync came out before Edge was released by Microsoft and probably hasn’t been seen as a priority. I don’t use Windows, but I’d see if choosing IE (if available) works.
From what I remember, IE just saves the bookmarks in a computer folder. Maybe Edge can pull from that same folder for the bookmarks.