Microsoft KB Archive/305929

= &quot;This Certificate Has an Invalid Digital Signature&quot; Error Message After You Install the Windows NT 4.0 Security Rollup Package =

Article ID: 305929

Article Last Modified on 10/29/2007

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APPLIES TO


 * Microsoft Windows NT 4.0 Service Pack 6a
 * Microsoft Windows NT 4.0 Service Pack 6a
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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This article was previously published under Q305929



SYMPTOMS
When you visit a secure Web site (a site whose address begins with &quot;https://&quot;) that uses Secure Sockets Layer (SSL), you may receive the following error message when you view the server certificate, even if the server certificate is properly trusted and valid:

This certificate has an invalid digital signature.

This problem occurs after you install the Windows NT 4.0 Security Rollup Package (SRP) on a computer that is running Microsoft Internet Explorer 5.5 Service Pack 2 (SP2) or Internet Explorer 5.01 Service Pack 2 (SP2). Note that this problem is with the user interface only; no functionality is lost.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The following file is available for download from the Microsoft Download Center:

Download Q305929i.exe now

Release Date: August 23, 2001

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The English version of this fix should have the following file attributes or later:   Date         Time   Version       Size     File name    Platform 05-Jul-2001 15:04  5.131.1877.9  371,472  Crypt32.dll  Intel 27-Jun-2000 19:57  5.131.1877.9   62,736  Softpub.dll  Intel NOTE: Because of file dependencies, this hotfix requires Microsoft Windows NT 4.0 Service Pack 6a.



STATUS
Microsoft has confirmed that this is a problem in the Windows NT 4.0 Security Rollup Package.



MORE INFORMATION
For additional information about the SRP, click the article number below to view the article in the Microsoft Knowledge Base:

299444 Post-Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP)

Keywords: kbproductlink kbhotfixserver kbqfe kbbug kbenv kberrmsg kbfix KB305929

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