Bizarre remote access problem

I have two computers on a branch network, needing to make remote access
(PPTP) connections to a Windows 2000 Server. One of the branch computers
can connect successfully, the other gets error 721 - the remote computer is
not responding (although it has connected OK in the past).

Both branch computers are running W2000 SP4. They both connect to the
internet through the same DSL router/gateway, which has no
workstation-specific firewall rules. I have checked every single property
of the connectoids on the two computers, and they are identical in every
respect. The router log at the head office shows exactly the same thing
regardless of which remote computer attempts to connect, namely a PPTP rule
match i.e. a successful passthrough, so it looks as though both of the two
computers' connection attempts are getting to the server. For the failed
connection attempts, there is nothing in the server event logs.

Surely by the time each connection attempt reaches the server they would
appear to be identical, regardless of which branch computer they originated
at? Why on earth would one of them fail and the other succeed? All
suggestions gratefully received.

Baz ÐÉÛÅÔ:
> I have two computers on a branch network, needing to make remote access
> (PPTP) connections to a Windows 2000 Server. One of the branch computers
> can connect successfully, the other gets error 721 - the remote computer is
> not responding (although it has connected OK in the past).
>
> Both branch computers are running W2000 SP4. They both connect to the
> internet through the same DSL router/gateway, which has no
> workstation-specific firewall rules. I have checked every single property
> of the connectoids on the two computers, and they are identical in every
> respect. The router log at the head office shows exactly the same thing
> regardless of which remote computer attempts to connect, namely a PPTP rule
> match i.e. a successful passthrough, so it looks as though both of the two
> computers' connection attempts are getting to the server. For the failed
> connection attempts, there is nothing in the server event logs.
>
> Surely by the time each connection attempt reaches the server they would
> appear to be identical, regardless of which branch computer they originated
> at? Why on earth would one of them fail and the other succeed? All
> suggestions gratefully received.
>
>
Are all accounts used to establish VPN connection stil valid (i.e. no
password expired, no lockdown accounts)?



--
With best regards
Nickolay Domukhovsky, MCSA

"Nick Domukhovsky" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
Baz ÐÉÛÅÔ:

>Are all accounts used to establish VPN connection stil valid (i.e. no
>password expired, no lockdown accounts)?
>
>
>
>--
>With best regards
>Nickolay Domukhovsky, MCSA

Thanks for replying. Sorry, I should have said that I've tried from both
computers with the same account. Connects from one, error 721 from the
other.

hi,
they can connect vpn and after that they can't do a rdp to the server?
--
Dragos CAMARA
MCSA Windows 2003 server


"Baz" wrote:

> I have two computers on a branch network, needing to make remote access
> (PPTP) connections to a Windows 2000 Server. One of the branch computers
> can connect successfully, the other gets error 721 - the remote computer is
> not responding (although it has connected OK in the past).
>
> Both branch computers are running W2000 SP4. They both connect to the
> internet through the same DSL router/gateway, which has no
> workstation-specific firewall rules. I have checked every single property
> of the connectoids on the two computers, and they are identical in every
> respect. The router log at the head office shows exactly the same thing
> regardless of which remote computer attempts to connect, namely a PPTP rule
> match i.e. a successful passthrough, so it looks as though both of the two
> computers' connection attempts are getting to the server. For the failed
> connection attempts, there is nothing in the server event logs.
>
> Surely by the time each connection attempt reaches the server they would
> appear to be identical, regardless of which branch computer they originated
> at? Why on earth would one of them fail and the other succeed? All
> suggestions gratefully received.
>
>
>

No, the VPN connection fails.

"Dragos CAMARA" <(E-Mail Removed)> wrote in message
news:A04DE051-BA05-4E67-9FA8-(E-Mail Removed)...
> hi,
> they can connect vpn and after that they can't do a rdp to the server?
> --
> Dragos CAMARA
> MCSA Windows 2003 server
>
>
> "Baz" wrote:
>
> > I have two computers on a branch network, needing to make remote access
> > (PPTP) connections to a Windows 2000 Server. One of the branch
computers
> > can connect successfully, the other gets error 721 - the remote computer
is
> > not responding (although it has connected OK in the past).
> >
> > Both branch computers are running W2000 SP4. They both connect to the
> > internet through the same DSL router/gateway, which has no
> > workstation-specific firewall rules. I have checked every single
property
> > of the connectoids on the two computers, and they are identical in every
> > respect. The router log at the head office shows exactly the same thing
> > regardless of which remote computer attempts to connect, namely a PPTP
rule
> > match i.e. a successful passthrough, so it looks as though both of the
two
> > computers' connection attempts are getting to the server. For the
failed
> > connection attempts, there is nothing in the server event logs.
> >
> > Surely by the time each connection attempt reaches the server they would
> > appear to be identical, regardless of which branch computer they
originated
> > at? Why on earth would one of them fail and the other succeed? All
> > suggestions gratefully received.
> >
> >
> >

try to see if that help you:
http://support.microsoft.com/default.aspx/kb/818043
--
Dragos CAMARA
MCSA Windows 2003 server


"Baz" wrote:

> No, the VPN connection fails.
>
> "Dragos CAMARA" <(E-Mail Removed)> wrote in message
> news:A04DE051-BA05-4E67-9FA8-(E-Mail Removed)...
> > hi,
> > they can connect vpn and after that they can't do a rdp to the server?
> > --
> > Dragos CAMARA
> > MCSA Windows 2003 server
> >
> >
> > "Baz" wrote:
> >
> > > I have two computers on a branch network, needing to make remote access
> > > (PPTP) connections to a Windows 2000 Server. One of the branch
> computers
> > > can connect successfully, the other gets error 721 - the remote computer
> is
> > > not responding (although it has connected OK in the past).
> > >
> > > Both branch computers are running W2000 SP4. They both connect to the
> > > internet through the same DSL router/gateway, which has no
> > > workstation-specific firewall rules. I have checked every single
> property
> > > of the connectoids on the two computers, and they are identical in every
> > > respect. The router log at the head office shows exactly the same thing
> > > regardless of which remote computer attempts to connect, namely a PPTP
> rule
> > > match i.e. a successful passthrough, so it looks as though both of the
> two
> > > computers' connection attempts are getting to the server. For the
> failed
> > > connection attempts, there is nothing in the server event logs.
> > >
> > > Surely by the time each connection attempt reaches the server they would
> > > appear to be identical, regardless of which branch computer they
> originated
> > > at? Why on earth would one of them fail and the other succeed? All
> > > suggestions gratefully received.
> > >
> > >
> > >
>
>
>

Is it always the same machine which fails, or does the first attempt
succeed and the second fail?

This problem can be caused by the DSL router at the branch. Some of
these will only allow one PPTP connection to be made. They do not usually
warn you of this - the second attempt just fails, as you describe.

"Baz" <(E-Mail Removed)> wrote in message
news:45e59146$0$32025$(E-Mail Removed)...
>I have two computers on a branch network, needing to make remote access
> (PPTP) connections to a Windows 2000 Server. One of the branch computers
> can connect successfully, the other gets error 721 - the remote computer
> is
> not responding (although it has connected OK in the past).
>
> Both branch computers are running W2000 SP4. They both connect to the
> internet through the same DSL router/gateway, which has no
> workstation-specific firewall rules. I have checked every single property
> of the connectoids on the two computers, and they are identical in every
> respect. The router log at the head office shows exactly the same thing
> regardless of which remote computer attempts to connect, namely a PPTP
> rule
> match i.e. a successful passthrough, so it looks as though both of the two
> computers' connection attempts are getting to the server. For the failed
> connection attempts, there is nothing in the server event logs.
>
> Surely by the time each connection attempt reaches the server they would
> appear to be identical, regardless of which branch computer they
> originated
> at? Why on earth would one of them fail and the other succeed? All
> suggestions gratefully received.
>
>