Andrea Beggi

Not everything that can be counted counts, and not everything that counts can be counted.

Cannot Install Service Pack 6/6a with High Encryption Internet Explorer

A T T E N Z I O N E ! Questo post ha piu' di sei mesi. Le informazioni contenute potrebbero non essere aggiornate.

The information in this article applies to:

Microsoft Windows NT Workstation versions 4.0 SP6, 4.0 SP6a
Microsoft Windows NT Server versions 4.0 SP6, 4.0 SP6a
Microsoft Windows NT Server, Enterprise Edition versions 4.0 SP6, 4.0 SP6a
Microsoft Windows NT Server version 4.0 SP6, Terminal Server Edition


If you attempt to install the standard-encryption (or 56-bit) version of Windows NT 4.0 Service Pack 6 or 6a on a Windows NT 4.0-based computer that already has Microsoft Internet Explorer High Encryption Pack or Internet Explorer version 5.5 installed, you receive the following error message:

You have chosen to install a version of the Service Pack with Standard Encryption onto a system with High Encryption. This is not supported. To successfully install
this version of the Service Pack, you must install the High Encryption version. Press Help for more information about obtaining the High Encryption Version of this
Service Pack. Service Pack Setup will now exit.

This issue occurs because the Schannel.dll file that is installed by Microsoft Internet Explorer High Encryption Pack and Internet Explorer 5.5 cannot be overwritten by the service pack installation program.Internet Explorer 5.5 includes 128-bit encryption by default because of the United States government’s recent decision to allow companies to export products that use strong, 128-bit encryption. Windows NT 4.0 Service Pack 6 and 6a were released before this decision was made. Therefore, localized versions of Service Pack 6 and 6a are 40-bit versions. 40-bit versions of these service packs detect higher encryption levels and do not allow themselves to be installed.

To work around this issue and prevent the version-number scanner from comparing the Schannel.dll file versions:

Use any text editor (such as Notepad) to open the Update.inf file in the I386\Update folder in the service pack source files.

Place a semicolon (;) before the reference to the Schannel.dll file in the
[CheckSecurity.System32.files] section of the Update.inf file.

Save and then close the Update.inf file.

Install the service pack.

Un commento

Pascal | #

Si, ok, è interessante, ma non funziona.
O meglio, preferisco non spiegare perché oggi nel 2010 mi ritrovo a installare un service Pack uscito 11 anni fa, ma comunque, una volta estratti tutti i files, modificato il file in questione… che cosa si dovrebbe usare per rimettere i files a posto nel grosso grasso eseguibile? perché ovviamente facendo partire l’update dalla cartella scompressa, non va…