I receive push messages for Microsoft account sing-on. I deleted my phone authentication from SharePoint and I am unable to sign-in now. I am the admin for the microsoft365, SharePoint.
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aditya royal matturi
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You may get help here:Common problems with two-factor verification and your work or school account
Otherwise, you may have to contact official technical support for o365:Ways to contact support for business products - Admin Help

Amos
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