This update resolves the "High Encryption Configuration Prevents Outlook Express Replies" issue in some Windows 98 and Windows 98 Second Edition computers. A computer is only vulnerable if it is configured with 128-bit encryption and the Input Locale is set to French. If a computer with this configuration receives an Outlook Express e-mail message from a computer with 56-bit encryption, replying to this e-mail message may cause the computer with 128-bit encryption to stop responding.
For more information on this update, please refer to the Microsoft Knowledge Base (KB) Article Q263305. (This site is in English.)