KB Issue
Some software makes changes to the settings of other programs, which can cause some major issues in your workflow. IIS Settings for a SSL in one of the cases here.
Issue Details
When you install certain programs, you may run into issues where you no longer have access to your IIS Web Sites. In the case like we have here.
The page must be viewed over a secure channel.
The page you are trying to access is secured with Secure Sockets Layer (SSL).
Recreate Issue
When installing Microsoft Exchange Server, set the Default IIS site to use SSL.
Resolve Issue
    Open IIS (Internet Information Services)
  1. Click on the [+] beside the [Server Name]
  2. Click on the [+] beside the [Web Sites] Folder
  3. Right Click on the [Default Web Site]
    4. (or the website that you are currently having the issue with)
  4. Click on [Properties]
  5. Click on the [Directory Security] Tab
  6. At the bottom, click on [Edit]
  7. At the top, uncheck [Require secure channel (SSL)]
  8. Click [OK]
  9. Then [Apply]
  10. Then [OK]
Run your website as normal, and everything should be back in working order.