This update resolves the "This Certificate has an Invalid Digital Signature" issue in Windows NT® 4.0 computers, and is discussed in Microsoft Knowledge Base (KB) Article Q305929. Download now to prevent a signature error when you install Windows NT 4.0 Security Rollup Package (Security Update, August 17, 2001).
If you install the Windows NT 4.0 Security Rollup Package (SRP) on an affected computer, when you access a SSL-secured Web site that uses Secure Sockets Layer (SSL), an error message appears when you view the server certificate, even though the server certificate is from a trusted source.
For more information about this issue, read Microsoft Knowledge Base (KB) Article Q305929. (This site is in English.)