Thank you for the update.

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Dorel Sturm" <dodo@poleposition-sw.com> wrote in message
news:g264aq$9m8$1@murphy.mediascape.de...
> Hi,
>
> I got it something to work by changing the group policy local on one
> machine.
> I did something similar I found here:
>
> http://groups.google.com/group/micro...36743f94028bec
>
> Yes I have domain group policy but there I had everything enabled.
>
> Anyway now it's working and I'm happy :-)
>
>
>
> "Robert L. (MS-MVP)" <findemail@chicagotech.net> wrote in message
> news:ustySpXxIHA.1240@TK2MSFTNGP02.phx.gbl...
>> Do you have any domain group policy? Posting the gpresult may help.
>>
>> --
>> Bob Lin, MS-MVP, MCSE & CNE
>> Networking, Internet, Routing, VPN Troubleshooting on
>> http://www.ChicagoTech.net
>> How to Setup Windows, Network, VPN & Remote Access on
>> http://www.HowToNetworking.com
>> "Dorel Sturm" <dodo@poleposition-sw.com> wrote in message
>> news:g217b1$odv$1@murphy.mediascape.de...
>>> Hi there,
>>>
>>> I have here a domain with this configuration:
>>>
>>> - computer A, B, C members of the same domain.
>>> - all three computers are running Windows XP. Computer A is running
>>> 64-bit version.
>>> - all of them are on the same local network.
>>> - all IP addresses are public addresses.
>>> - on none of the computers the Windows Firewall is enabled (in fact the
>>> service is stopped!)
>>> - on all three computers the same user is logged on (administrator
>>> rights on domain and each computer)
>>> - in control panel in System->Remote both Remote Assistance and Remote
>>> Desktop are enabled.
>>>
>>> The problem is that "Offer remote assistance" does not work. All the
>>> time I get the error "A Remote Assistance connection could not be
>>> established. You may want to check for network issues or determine if
>>> the invitation expired or was cancelled by the person who sent it." I
>>> tried everything possible but no help.
>>>
>>> The interesting stuff: Offer remote assistance works only from computer
>>> B!!! From B to A or C works OK but never ever from computer A to B or C
>>> or from C to A or B!!! There are no differences regarding network
>>> connections, domain membership between computer A and B.
>>>
>>> Remote desktop work correctly from any computer to any computer.
>>>
>>> When I start "Offer Remote Assistance" from computer A and I enter in
>>> the first line the IP address of computer B and I press Connect I get
>>> the correct logged on user name on computer B (I checked this by using
>>> different users). So the connection to computer B is OK. But when I
>>> press Start Remote Assistance button I get the error.
>>>
>>> Any ideas?
>>>
>>> Thanks for your help.
>>>
>>>
>>>
>>
>
>