Security Log Error Messages Appear When You Try to Establish an L2TP Connection (284970)

The information in this article applies to:

Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Professional SP1

This article was previously published under Q284970

SYMPTOMS

When you try to establish a Layer 2 Tunneling Protocol (L2TP) connection from a client to a virtual private network (VPN) server that has a certificate from a trusted authority, you may receive error messages and the process does not work.

On the client, you receive the following security log error message:

IKE security association negotiation failed.
Mode: Key Exchange Mode (Main Mode)
Failure Point: Me
Failure Reason: IKE authentication credentials are unacceptable

On the VPN server, you receive the following security log error message:

Trust failed. 2 0

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date        Time    Version          Size     File name
   ---------------------------------------------------------
   01/09/2001  11:52p  5.131.2195.2833  466,704  crypt32.dll

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 2.

MORE INFORMATION

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Modification Type:	Minor	Last Reviewed:	9/26/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbnetwork kbWin2000PreSP2Fix KB284970