"Alasdair" wrote:

When connected to a pptp VPN resources on the local domain are
inconsistantly available. Previously with XP they were always available even
if connected to a VPN.

What has changed?

Printing:
From win 7, I can print to a Lan printer shared on the server (2008)
Once connected to a remote VPN (windows 2003 pptp), the print que says
"Accessed Denied" when trying to print to the same printer.
With XP printing was still possible to the Lan even though connected to a VPN.


Mapped Drives:
Sometime they work, sometimes they don't. If I have a mapped drive to a
local file server once connected to the VPN I can't list the contents of
drive, or access any of the files.
Other times even with a VPN connected I can acess the files. If you access
the drive before opening the VPN this seems to help.


I have exactly the same problem using Windows 7 Ultimate x64 in a Windows
2008 R2 domain and VPN to some appliance.


I thought it may be a DNS issue but I have added the server to my hosts
file. The host name resolves correctly even after an "ipconfig /flushdns".

Does windows 7 need to resolve service records on the local AD dns server
before passing on credentials? The order of accessing DNS servers is the
remote VPN DNS server first and then the local DNS server second. Is this why
I can always print to a local printer that I installed using its IP address,
whilst connected to a VPN, which then prompted me for credentials. I assume
the credentials were stored locally, making them always available no matter
what the order of DNS servers were.

For me it is no DNS problem.
Even when connected to the VPN the DNS servers are still the local ones.

Also the default route is to the local gateway and not via VPN.

Once connected to a VPN why can't Vista/Win7 always print/access local
resources?
Connected to the same VPNs XP could always access local recources.
Whats changed?

Same here. Using XP (like I did before switiching to Windows 7) I could
access all local/domain resources without any poblem.

Now I can not print. For printing I have to disconnect from VPN, then all
print jobs are spooled from my machine to the server.

After more research I found the following discussion about our problem:
http://www.vistax64.com/vista-networ...l-network.html

After more research I found the following discussion about our problem:
http://www.vistax64.com/vista-networ...l-network.html

After still more research I found the solution for our problem:

Starting with Vista there is a hidden configuration setting called
UseRasCredentials.
If this is set to 1 Windows uses the credentials of the VPN connection for
all further accesses (this is contrary to the behaviour of XP).

Details can be found he
http://social.technet.microsoft.com/...-50a5c13a2713/

After still more research I found the solution for our problem:

Starting with Vista there is a hidden configuration setting called
UseRasCredentials.
If this is set to 1 Windows uses the credentials of the VPN connection for
all further accesses (this is contrary to the behaviour of XP).

Details can be found he
http://social.technet.microsoft.com/...-50a5c13a2713/