title: AADB2C99002 error. B2C Sign In policy without Sign Up policy?
body: <p>Is it possible to implement authentication via Azure AD B2C by only configuring a <strong>SignIn</strong> Policy, without any SignUp or SignUpSignIn policies?</p>
  <p>The idea is to add users from the Azure B2C portal instead of allowing users to register themselves via any kind of sign-up form.</p>
  <p>When trying to do this I keep getting the following error:</p>
  <pre><code>AADB2C99002: User does not exist. Please sign up before you can sign in.
  </code></pre>
  <p>Please help.</p>
  <p>It's been already asked here, with no answer: <a href="https://feedback.azure.com/forums/169401-azure-active-directory/suggestions/20440876-aadb2c99002-user-does-not-exist-please-sign-up-b" rel="nofollow noreferrer">https://feedback.azure.com/forums/169401-azure-active-directory/suggestions/20440876-aadb2c99002-user-does-not-exist-please-sign-up-b</a></p>