The certificate did it for me: https://forums.macrumors.com/thread...n-at-icloud-system-preferences-panel.2341297/
The certificate worked for me after a logout, reboot and login again. https://www.apple.com/certificateauthority/AppleISTCA2G1.cerunfortunately no fix yet for iPads on the latest iOS (4th Gen)
So, it’s a gamble… It worked for me but I didn’t tried iMessage though. For @Urbanpixels, this solution didn’t worked. The certificate is still on my profiles and the old iPad work as it should.I'm not sure if I can reproduce but I've somehow managed to trick iOS and iCloud to accept iCloud account input.
What I did was
What I couldn't do is activate iMessage with Apple ID after above process. Might want to activate it before doing above.
- Install intermediate Apple cert(refer Sierra/High Sierra issue from this thread)
- tried to login with iCloud account in Settings app
- Make sure Settings app get stuck in the login loop(might have to install additional certs to reproduce) for at least few minutes
- Kill Settings app
- Remove intermediate cert
- Reopen Settings app
If I have to reset the device, I might try again to reproduce.... until then, I'll keep it as is.
Hope this helps.
That intermediate cert is only valid until May 21 2022 in my time zone(maybe 20th in other time zone) so this is only effective for a month for sure.
I do not use 2FA nor iMessage on this old iPad and login with a different credential for Appstore and iTunes. This one had no problem to connect prior to the certificate, weird!I could reproduce the iCloud login.
Cert needed has changed time to time... Apple IST CA 2 - G1 or CA 8 - G1.
Once installed, iCloud login partially works with 2FA. It may go through without error but usually fails to actually login.
So, on next try, after inputting credential then hit go, wait for like 10 seconds.(still waiting for login)
Kill Settings app and relaunch the app again.
If you input iTunes Store & App Store credential &/ iMessage Apple ID prior to above, you'll be able to use almost all the iCloud related services.
The certificate worked for me after a logout, reboot and login again. https://www.apple.com/certificateauthority/AppleISTCA2G1.cer
**iPad 4th Gen on iOS 10.3.3
Or maybe not. I spoke too soon.Seems to be fixed just now.
Someone said to me (on the Apple Support forums) that the certificate was extended to 2031…Or maybe not. I spoke too soon.