title: How to use both internal Forms authenticationas well as Azure AD authentication
body: <p>In my web application I have forms authentication implemented by default. But for internal users I use AD for authentication.
  I had an on-premise AD exposed over LDAP which I used just to authenticate internal users. </p>
  
  <p>Now we are planning to move to azure. So we have migrated to azure AD.</p>
  
  <p>The problem with Azure AD is I can't no longer use the form inside my page to authenticate users. I have to redirect users to azure's authentication page (OWIN OpenIDConnect). Is there a way I can have the username/password in my local application and then send them to any azure api/service to authenticate it?</p>
  
  <p>The other problem is - Now I cannot use forms authentication as default in my web.config or it never redirects to the azure's authentication page.</p>
  
  <p>Can anyone please help?</p>
  
  <p><strong>Note: It is a single tenant WEB Application with multiple users</strong></p>