Thank you for your time on the call. As per our discussion on phone you were getting error as below while trying to connect to Azure AD from devops.
We found that you were using guest account to connect to Azure AD. As explained guest account will always have restricted permissions than a member account in Azure AD.
To fix this account we created a new member account in Azure AD and used that account to connect. Issue got resolved.
Let me know if you have any further questions.
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