iCloud login problem Could not communicate with the server error.

I have reverted to catalina and everything works fine
i don't know what to doo :(
 

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Did you run new install or upgrade? Maybe it is worth to check EN0 network interface. I forgot to check it. I might wait a bit to see how this issue can be resolved.
 
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Did you run new install or upgrade? Maybe it is worth to check EN0 network interface. I forgot to check it. I might wait a bit to see how this issue can be resolved.
i did everything try to update , try clean install , changed network to en0, tried multiple times to change smbios serials noting worked for me :(
 
i did everything try to update , try clean install , changed network to en0, tried multiple times to change smbios serials noting worked for me :(
Sounds bad, man. Not sure what to do. Many attempts may cause your Apple ID to be blocked. However I do not need Big Sur without possibility to use Apple ID neither.
 
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Thank you so much i did that and iMessages and FaceTime works flawlessly you are the best 🙌🏻🤟🏻
I did clean install for Big Sur, however I was using catalina before (able to login to iCould). I copy the whole EFI folder, so basically my serial remain same as I install catalina. So my Big Sur is able to login to iCould.
 
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