RAS Authentication Rechallenge Resets Compression Flag

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This article was previously published under Q176502

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SYMPTOMS

When you are connected to a Remote Access Service (RAS) server with either a Windows NT RAS Client or a Windows NT Routing and Remote Access Service (RRAS) Client that is using software compression, the compression flag may get reset. This will cause the RAS server to discard any packets from your RAS or RRAS Client.

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CAUSE

The RAS server rechallenged the client's authentication by issuing an LCPConfigRequest after the connection has been established. During this reauthentication, the compression flag is reset so that the server thinks the client is not using compression; however, the client is still sending compressed data.

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RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 (http://support.microsoft.com/kb/152734/EN-US/ ) How to Obtain the Latest Windows NT 4.0 Service Pack

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STATUS

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

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