title: Implementing SSO with .Net 4.0 webforms and Azure AD
body: <p>We are starting with Azure AD to implement SSO on a website developed with webforms and Office 365, so I was reading about it, and as far as I understand, we need to use some nuggets like these</p>
  
  <pre><code>PM&gt; Install-Package Microsoft.Owin.Security.OpenIdConnect 
  PM&gt; Install-Package Microsoft.Owin.Security.Cookies 
  PM&gt; Install-Package Microsoft.Owin.Host.SystemWeb
  </code></pre>
  
  <p>Now, to install it, we need the 4.5 .NET framework on our project, but it was developed using 4.0 framework.</p>
  
  <p>Does anyone know what's the best approach to connect a webform 4.0 web application to Azure AD? All the information I have found on Microsoft documentation is oriented to MVC and uses libraries like 4.5 OWINs</p>
  
  <p>Thanks in advance</p>