[fix] iCloud - Verification Failed: An unknown error occurred Apple ID

If you were trying to login to your iCloud account on your iPhone, iPad or Mac and you might at times get the below "an unknown error occurred" error

macOS iCloud - An unknown error occurred

How to Fix iCloud "an unknown error occurred with Apple ID"

Below are some steps, some of them should work for you,

• iOS: Restart the Setting App and try again.
• On macOS: Go to *System Preferences... -> Internet Accounts and try the iCloud Account.
• Make sure you have a stable internet connection.
• Try switching to some other Network: Wifi/4G/5G Cellular connection.
• Restart your device.

* On macOS Ventura System Preferences has been replaced by System Settings