VSTS will no longer allow creation of new MSA users with custom domain names backed by AzureAD

3-28-2018 UPDATE : The deadline listed below has been extended to the end of September.  Read my latest blog post for more information. On September 15, 2016, the Azure Active Directory (Azure AD) team blocked the ability to create new Microsoft accounts using email addresses in domains that are configured in Azure AD. Many VSTS... Read More

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