Restrict users from creating Personal Microsoft Account using their Corporate Email


Good day!


How can we restrict  users from creating a personal Microsoft account using their Corporate email account. We have a user that was able to send using his personal account. 


Ex. Scenario

Company Microsoft Account:

Personal Microsoft Account:

User sign-in to Outlook live using his Personal Microsoft Account and was able to send email using the


Hope someone could help us with this. Thanks!


2 Replies
best response confirmed by Mary_Yvette (Contributor)



Have you tried this by yourself? this is not working since 2018

I tried again today and got this message:

You can't sign up here with a work or school email.JPG

@Alireza Rahimifarid 

Thank you for this!


What I have tried is sending an email using my Personal Microsoft Account in Outlook live. Which I created before the restriction. If that is the case for users that have created their Personal Microsoft Account before, can we restrict them sending email using their corporate account?