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Service Pack 2 May Cause Loss of Connectivity in Remote Access

This article was previously published under Q161368
This article has been archived. It is offered "as is" and will no longer be updated.
SYMPTOMS
After you install Service Pack 2 for Windows NT 4.0, you may not be ableto ping or otherwise make use of the connection you have established withan ISP when using RAS to dial out.

Additionally, the route table may not have a route for the remoteconnection.
CAUSE
The Multilinking Protocol (MP) option is always negotiated during the LinkControl Protocol (LCP)-phase of negotiation in Service Pack 2 for WindowsNT 4.0. This occurs if the Enable PPP LCP Extensions check box on theServer tab of the Edit Phonebook Entry dialog box is enabled or disabled.

Although MP is an extension of LCP, it is not part of RFC 1570 -- LCPExtensions. In Service Pack 2 for Windows NT 4.0, it is no longernecessary to enable this check box to attempt MP negotiation.

NOTE: Some Internet service providers (ISP) cannot deal with the MPoptions correctly. This problem is resolved by changing the conditions inwhich RAS sends multilink information to the remote server.
RESOLUTION
The binaries below resolve this issue by making an attempt at MPnegotiation only if there is more than one link in the phonebook entry.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Windows NTversion 4.0. This problem was corrected in the latest Microsoft Windows NT4.0 U.S. Service Pack. For information on obtaining the service pack,query on the following word in the Microsoft Knowledge Base (without thespaces):
S E R V P A C K
NOTE: This fix is to be applied only to computers with Service Pack 2 forWindows NT 4.0 installed.

This hotfix has been posted to the following Internet location:
MORE INFORMATION

For additional information, please see the following article in theMicrosoft Knowledge Base:
ARTICLE-ID: 166090
TITLE : MSN Support in Windows NT
sp2 prodnt dun dial-up networking Bad IP Address RAS
Properties

Article ID: 161368 - Last Review: 10/04/2013 18:11:22 - Revision: 2.1

Microsoft Windows NT 4.0 Service Pack 2, Microsoft Windows NT Workstation 4.0 Developer Edition

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