What Does the Error Message “The page cannot be displayed” (Cannot find server or DNS error) Mean?

There are a few reasons for the error message: "The page cannot be displayed".

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There are several things that can cause this vague error message. The most common reasons we have seen are as follows:

  • A firewall or router is blocking access on your network on port 443.
  • The private key for your certificate does not match or is not associated correctly with the certificate.
  • The DNS entries for the web site are configured incorrectly.
  • The web server is not configured to run on port 443 for https requests.
  • The web site is not the IIS Default Website and has not been bound to an IP address for https requests. (IIS defaults this to “All Unassigned”).

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