There are few ways to enable HTTP to HTTP redirect on IIS websites. In this example I will use URL Rewrite method.

• If your don’t already have it download and install IIS URL Rewrite extension.
  

• Double click on URL Rewrite in IIS Manager, then click Add Rules > Blank Rule
  
• Configure the rule:
  
  • Name: HTTP to HTTPS
  • Match URL
    • Requested URL: Matches the Pattern
    • Using: Wildcards
    • Pattern: *
    • Ignore case: Yes
  • Conditions
    • Input: {HTTPS} 
    • Type: Matches the Pattern
    • Pattern: off
  • Action
    • Action Type: Redirect
    • Redirect URL: {HTTP_HOST}{REQUEST_URI}”>https://{HTTP_HOST}{REQUEST_URI}
    • Append Query String: No
    • Redirect Type: Permanent (301)

• Click Apply

Rewrite rule is written to <rewrite> … </rewrite> section of web.config file that is saved in the website’s root folder. In the above example it would look like this:

<rewrite>
  <rules>
    <rule name="HTTP to HTTPS" patternSyntax="Wildcard" stopProcessing="true">
      <match url="*" />
      <conditions logicalGrouping="MatchAny">
        <add input="{HTTPS}" pattern="off" />
      </conditions>
      <action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" appendQueryString="false" />
    </rule>
  </rules>
</rewrite>

June 2017
IIS 7
Windows Server 2008R2