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On left side of the Microsoft Account landing page, select Your Info.
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In the Account info section, select Edit account Info. If prompted, log in again.
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To add a new phone number, select Add phone number.
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To remove a number, select Remove.
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To change a phone number, simply add a new number and then delete the old one.
To see self-help options or to chat live with a Microsoft specialist, choose a product on the Contact us page.
For Microsoft Store and billing help, check out the Contact Microsoft Store Support page.
