Internet Explorer with 40-bit (SGC) encryption is available worldwide, but Internet Explorer with full 128-bit encryption is available in the United States (or its territories, possessions and dependencies) and Canada only. If you have installed Internet Explorer with 40-bit (SGC) encryption and are in the United States (or its territories, possessions and dependencies) or Canada, you can upgrade to Internet Explorer with full 128-bit encryption.
NOTE: To upgrade Internet Explorer 3.02 on Windows NT 4.0, download and install the 128-bit version of the Windows NT 4.0 Service Pack 3 (SP3) or later.
You may not be able to download the 128-bit version upgrade for all operating systems. If an upgrade is not available for your operating system, you must download a 128-bit browser only (or browser and components) package from this link and reinstall it over your current version.
Note The 128-bit versions of Internet Explorer are no longer available from Microsoft on CD-ROM.