When changing an Azure B2C email adress, do I need to change the UPN as well

Question

In Azure B2C with the GraphAPI I can change the email address of an existing user with a http PATCH command: https://azure.microsoft.com/nl-nl/documentation/articles/active-directory-b2c-devquickstarts-graph-dotnet/

"SignInNames": [
{
  "type": "emailAddress",
  "value": "demo@domain.com"
}

This works, and I can login with the new email address.

But this leaves the UPN at the old value, do I need to set the UPN as well, or is there no harm in having the UPN stay at the old email address?

Answer 1

是的，无需更新UPN字段。

Answer 2

使用 v1.0 版本的 Microsoft Graph API，更改登录电子邮件地址的 PATCH 请求正文应如下所示：

      {"identities":[{
        "signInType":"emailAddress",
        "issuer":"yourTenantName.onmicrosoft.com",
        "issuerAssignedId":"newemail@email.com"
      }]}

Answer 3

这就是为什么（我认为）电子邮件地址永远不应为默认地址。而是选择用户名帐户选项，电子邮件将变得更容易处理。