Can I disable sign-up in Azure AD B2C? In other words, I don\'t want customers to sign up accounts by themselves, I want it to be done only by admin in Azure. Thanks.
In Built-in policies (aka User Flows) you can choose a sign-in only policy.
In Custom Policies you can use the metadata properties shown in the snippet below, without defining any custom css.
Local Account Signin Email api.selfasserted false None ...