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My Account Sign in to manage your Microsoft account settings and access personalized services
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Add and replace your onmicrosoft. com fallback domain in Microsoft 365 . . . Before you begin To add, modify, or remove domains, you must be a Domain Name Administrator of a business or enterprise plan These changes affect the whole tenant; Customized administrators or regular users aren't able to make these changes Add a new onmicrosoft com domain In the Microsoft 365 admin center, select Settings, and then select Domains Select your onmicrosoft com default domain