A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hello,
Thank you for posting this issue on community forum. You've definitely been through a lot trying to fix this, so let's try a few things that might actually work.Since OneNote isn't syncing and you're getting that network error, it's possible that something on your iPad is blocking Microsoft's services.First, go to Settings > Wi-Fi and tap your network, then check if there's a VPN or custom DNS enabled—if there is, turn it off and try logging in again.Next, try resetting your Microsoft account's login by going to Microsoft Account Recovery from a different device, like your MacBook, and see if signing in there helps reset your access.If you still can't connect on your iPad, open Safari, go to OneNote Online, and try signing in there.If that fails too, it's worth testing a different browser like Chrome or Edge to see if it’s a Safari-specific issue.Another thing—some Apple devices have content restrictions or screen time limits that could mess with certain apps.Go to Settings > Screen Time > Content & Privacy Restrictions and see if anything is blocking Microsoft apps.If the problem is still hanging around, try manually reinstalling the app, but this time download it using cellular data instead of Wi-Fi—sometimes weird network caching messes with app installs.Let me know if this works out for you. Sincerely,Walter White | Microsoft Community Moderator