title: OWIN: webapi call returning 401 unauthoried Error in Azure
body: <p>I have created two applications one for front end(created using AngularJs and Asp.Net MVC) and for backend I used web Api application.</p>
  
  <p>I am trying to secure my application with forms authentication in front End and implemented basic forms authentication in back End.</p>
  
  <p>When I tested locally in IIS it works fine.But when I hosted my application in Azure, API call with authentication attribute returns with 401 unauthorized error.</p>
  
  <p>response Header:</p>
  
  <pre><code> Access-Control-Allow-Origin:*
      Cache-Control:no-cache
      Content-Length:0
      Date:Wed, 05 Oct 2016 11:08:30 GMT
      Expires:-1
      Pragma:no-cache
      Server:Microsoft-IIS/8.0
      Set-Cookie:ARRAffinity=925cd503f9e5771e9ad651c59baa4a1f678d93cac8b9da4dc9bcb64892ac8710;Path=/;Domain=FrontEnd.azurewebsites.net
      WWW-Authenticate:Basic realm="Backend.azurewebsites.net"
      X-AspNet-Version:4.0.30319
      X-Powered-By:ASP.NET
  </code></pre>
  
  <p>Request Header;</p>
  
  <pre><code>Accept:application/json, text/plain, */*
  Accept-Encoding:gzip, deflate, sdch, br
  Accept-Language:en-US,en;q=0.8
  Cache-Control:no-cache
  Connection:keep-alive
  Host:backend.azurewebsites.net
  Origin:http://FrontEnd.azurewebsites.net
  Pragma:no-cache
  Referer:http://FrontEnd.azurewebsites.net/
  Token:null
  User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36
  </code></pre>
  
  <p>But in local along with request header </p>
  
  <pre><code>    Authorization: Basic dmlzaG53guFua2FyLnNha3Roadh4bEBnbWFpbC5jb206MTIzMTIz
     Cookie: __RequestVerificationToken_L3Nfg4dwc3Bh0=YGwlXkckjhg6xTESkI-lN9sNtDVsfefshsrvGWPKekmv_GLZ0Rq8eA5P8Z7sdf4trwbPX4WymcGJJrLamQLMe2Vf2D2fVUg4qJptOvcsCWg1; ASP.NET_SessionId=gk4s1rlsfg5gfeafo3455dkr; .ASPXAUTH=C8113FD23FC4902dsfrsdf5FB3399BA121703F41F9A57AEA50667F2AD4FC02F3D3955215A91F6A3A2EA4287202522380435A93D8BE78D45E6D24FB7E05F64653AE06E0026DEB2911343591563F70EE8EE76338F07CBABE6EA4B95359F3C31sdf9C999sdf2864849gfdB916A06gfds29E3C8D01D2371807E98335000D4D14B391CCE3zxcd49DB77696F4BB77E4434
  </code></pre>
  
  <p>is passed</p>
  
  <p>Authorization and Cookie parameter is not get added in request from azure frontEND app with forms authentication.</p>
  
  <p>I Looked into authentication/authorization configuration of my backend app in azure it sets off.can any body know what is the issue or what I need to configure in azure portal.Thanks in advance.</p>