I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.
Issue:>
Unable to select domain when creating new configuration with Microsoft Entra ID
Solution:>
The issue is fixed by having the right sync client installed locally.>
If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.
Hope this helps. Do let us know if you any further queries.
Thanks,
Akhilesh.
If this answers your query, do click Accept Answer
and Yes
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