Miscellaneous topics that do not fit into specific categories.
Hello, thank you for reaching out to Microsoft Q&A.
Please note that the option to Add phone number in the Manage how you sign in to your Microsoft account section is currently missing and this appears to be a widespread issue. It seems to be affecting many accounts and is likely related to a backend or server-side change on Microsoft’s end, rather than a problem specific to your account or device.
This issue has been ongoing for over a week. I suspect that the option to add a phone number to a Microsoft account may have been completely removed for security reasons. However, there is no official confirmation about this yet.
*Microsoft has confirmed that the option to add a phone number to receive verification codes has been removed. Therefore, I think they may also have removed this option from the profile section.
However, I recommend that you submit your feedback to Microsoft through their support channels:
https://feedbackportal.microsoft.com/feedback/idea/f8a0bc5d-0d4c-f111-9a90-7c1e52bd3277
(This is feedback from a user requesting that Microsoft restore the option to sign in with a phone number on their account.)