Microsoft KB Archive/176502

= RAS Authentication Rechallenge Resets Compression Flag =

Article ID: 176502

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Routing and Remote Access Service Update for Windows NT Server 4.0

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This article was previously published under Q176502



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.



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.



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 How to Obtain the Latest Windows NT 4.0 Service Pack



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.

Keywords: kbhotfixserver kbqfe kbbug kbfix kbinterop kbnetwork KB176502

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