Hi Mukesh,
Welcome to Q&A Forum; this is a great place to get support, answers, and tips.
Thank you for posting your query; I'll be more than glad to help you out.
How did you try before to change your address in your account? In Azure AD? or in your Microsoft Account?
I just checked and changed my address here:
https://account.microsoft.com/billing/addresses
(This is also responsible for your Azure billing)
I hope my answer is helpful to you,
Your
Bjoern Peters
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