Hi
Maybe this will be of help
Reference Link:
http://support.microsoft.com/default.aspx?scid=kb;[LN];817069
Cannot Connect to a Network Share over a VPN Connection
SYMPTOMS
========
After you establish a virtual private network (VPN) connection with a
server, you cannot connect to any shares on the server. You can ping the
server by name and Internet Protocol (IP) address, but cannot connect to
shares on the server. Net View and Net Use commands fail with one of the
following error messages:
System error 121. The semaphore timeout period has expired
System error 53. The network path was not found.
System error 64. The specified network name is no longer available.
CAUSE
=====
This problem occurs because the TCP window size for the TCP connection for
the VPN client is 0 (zero).
RESOLUTION
==========
Service Pack Information
=========================
To resolve this problem, obtain the latest service pack for Microsoft
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
Hotfix Information
==================
A supported fix is now available from Microsoft, but it is only intended to
correct the problem that is described in this article. Apply it only to
computers that are experiencing this specific problem. This fix may receive
additional testing. Therefore, if you are not severely affected by this
problem, Microsoft recommends that you wait for the next Windows 2000
service pack that contains this fix.
To resolve this problem immediately, contact Microsoft Product Support
Services to obtain the fix. For a complete list of Microsoft Product
Support Services phone numbers and information about support costs, visit
the following Microsoft Web site:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
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 typical 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 has the file attributes (or later) that are
listed in the following table. The dates and times for these files are
listed in coordinated universal time (UTC). When you view the file
information, it is converted to local time. To find the difference between
UTC and local time, use the Time Zone tab in the Date and Time tool in
Control Panel.
Date Time Version Size File name
--------------------------------------------------------------
17-Mar-2003 17:11 5.0.2195.6687 119,024 Afd.sys
20-Mar-2003 09:14 5.0.2195.6602 108,816 Msafd.dll
20-Mar-2003 09:14 5.0.2195.6691 314,704 Tcpip.sys
15-Jan-2003 10:56 5.0.2195.6655 16,240 Tdi.sys
20-Mar-2003 09:14 5.0.2195.6601 17,680 Wshtcpip.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 Microsoft Windows 2000 Service Pack 4.
MORE INFORMATION
================
For additional information about how to obtain a hotfix for Windows 2000
Datacenter Server, click the article number below to view the article in
the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
Shilpa Sinha
This posting is provided "AS IS" with no warranties, and confers no rights.
