failed to verify identity

Hello scoofers,

You may want to try signing in without using the proxy server to see if that helps resolve your issue. Also, make sure you meet the system requirements for iCloud as shown here:

System requirements for iCloud - Apple Support

PC

* Microsoft Windows 10 or later*

* iCloud for Windows 11 or later

* iTunes 12.7

* Outlook 2016 or later

* Firefox 45 or later, Google Chrome 54 or later (desktop mode only), Microsoft Edge, or Opera

* 64-bit Windows (May 2019 Update or later) is required to install iCloud for Windows.

Are you trying to sign into the iCloud website as shown here?: Sign in and use iCloud.com - Apple Support

Sign in to iCloud.com

1. Go to iCloud.com, then sign in with your Apple ID.

2. If you’re already signed in to your device with your Apple ID and your device has Face ID or Touch ID, you can use it to sign in to iCloud.com.

3. If you set up two-factor authentication or two-step verification, follow the onscreen instructions to verify your identity by entering a code sent to a trusted device or phone number, or by using a security key.

4. If you lost your trusted device, you can still use Find Devices by clicking the Find Devices button after you enter your Apple ID. See How to sign in to Find Devices on iCloud.com.

See the Apple Support articles Two-factor authentication for Apple ID, Two-step verification for Apple ID, and About security keys for Apple ID.

If the issue persists, please explain in more detail exactly how you are trying to sign in. This can help the community provide additional assistance.

Thanks for using the Apple Support Communities, and have a great day!