@Richa Kumari, Thanks for posting in Q&A. The error message "domain not available" when trying to connect to a Cloud PC could indicate it is unable to connect to a domain controller. And I notice you already check the ANC connectivity to Azure AD and it is healthy. To troubleshoot the isue, I suggest open case to check int he backgound to get help. Here is a link with the steps to open case:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding.
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