When you edit the Tcp1323Opts registry value for the TCP/IP protocol in your Windows 98/95-based computer, it does not enable RFC 1323 options as documented in the following article in the Microsoft Knowledge Base: Also, changing the Tcp1323Opts registry value has no effect on the behavior of the TCP/IP protocol on Windows 95 and Windows 98.

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There is a problem in the TCP protocol driver (Vtcp.386) when reading and implementing this registry value.

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A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: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 English version of this fix should have the following file attributes or later:

Date Time Version Size File name Platform
--------------------------------------------------------------------
08/02/99 2:29pm 4.10.2223 60,281 Vtcp.386 Win98 & Win98SE
				

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Microsoft has confirmed that this is a problem in Windows 95 and Windows 98.

This issue is resolved in Microsoft Windows Millennium Edition.

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With this fix installed, Windows 98 supports RFC 1323 options as documented in the following article in the Microsoft Knowledge Base: Enabling these RFC 1323 options may improve network performance in certain situations, such as communicating over a satellite link.

For additional information about how other Microsoft Windows versions behave with respect to RFC 1323, please click the article number(s) below to view the article(s) in the Microsoft Knowledge Base: For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

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