Err Msg: Unable to Establish a Secure Connection to...

ID: Q193682

The information in this article applies to:

Microsoft Internet Explorer versions 4.0, 4.01 for Macintosh

SYMPTOMS

When you attempt to log on to a secure Web site using Internet Explorer 4.01 for Macintosh, you may receive the following error message:

   Unable to establish a secure connection to <web page> failed. There is
   a problem with the security certificate from that site (the identity
   of the certificate issuer is unknown).

   The information you view and send will be readable to others while in
   transit, and it may not go to the intended party.

   Continue loading this page?

If you click Continue, you receive the following error message:

   Security failure. A secure connection could not be established.

When you attempt to log on to a secure Web site using Internet Explorer 4.0 for Macintosh, you may receive the following message in the browser window:

   Insufficient encryption
   This document requires a larger secret key size for encryption than
   your browser is capable of supporting.

CAUSE

You may receive either of these messages if the site requires 128-bit encryption and you are using 40-bit encryption.

RESOLUTION

Internet Explorer 4.01

To resolve this behavior, upgrade to the 128-bit version of Internet Explorer. To obtain the 128-bit Internet Explorer upgrade, please visit the following Microsoft Web site:

   http://www.microsoft.com/ie/download/?/ie/download/128bit.htm

Internet Explorer 4.0

To resolve this behavior, you must first upgrade to Internet Explorer 4.01 and then obtain the 128-bit Internet Explorer upgrade. To upgrade to Internet Explorer 4.01, please visit the following Microsoft Web site:

   http://www.microsoft.com/ie/download/

Additional query words:

Keywords          : kbenv kberrmsg msiemac 
Version           : MACINTOSH:4.0,4.01
Platform          : MACINTOSH
Issue type        : kbprb

Last Reviewed: October 6, 1998