HandShaker
Technical User
Hello,
I'm new to the forums, finding them while on a mission to solve an obscure problem I'm having with XP SP2 computers and Dial Up Networking.
Our company has a product that runs on stand-alone Win2000Pro computers at client sites. These client computers are contacted via DUN through a modem connected to the PSTN.
The client computers simply use the Windows incoming connection setup. This setup is successfully implemented in dozens of installations. Pretty much all the computers we're using have USR External 56k modems.
My problem is:
Two of the remote computers we use to connect to the sites have recently been upgraded to XP SP2. Since then I can access all my Win2000Pro client computers except one with which the SP2 computers fail to authenticate with "Error 721: Remote computer not responding". This is after a successfull handshake and hangs at the authentication dialogue.
What puzzles me is that other remote computers running Win2000 connect to the rogue client without any problems. The issue is only evident in Win XP SP2.
I'm still unsure where the problem lies. I have checked, double checked and triple checked the settings on the problem client and can't find any inconsistencies. The User has permissions, the modem is configured (I assume) correctly. The fact that other Win2k machines can connect suggests the setup is ok.
The XP SP2 computers have no firewall running and I've been through the setup with the Microsoft SP2 support and they can't find the problem either. I've not finished with the Win2k support guys yet though.
I've sent a different modem out to site to see if that helps but I can't think how the hardware setup on the remote client would effect only XP SP2 and not all connecting computers.
Any Help would be very much appreciated. The problems double fold as one of the XP machines that won't connect is a clients new viewer. I need anything you can suggest no matter how trivial.
Thanks in Advance
Please say if you need any more details.
I'm new to the forums, finding them while on a mission to solve an obscure problem I'm having with XP SP2 computers and Dial Up Networking.
Our company has a product that runs on stand-alone Win2000Pro computers at client sites. These client computers are contacted via DUN through a modem connected to the PSTN.
The client computers simply use the Windows incoming connection setup. This setup is successfully implemented in dozens of installations. Pretty much all the computers we're using have USR External 56k modems.
My problem is:
Two of the remote computers we use to connect to the sites have recently been upgraded to XP SP2. Since then I can access all my Win2000Pro client computers except one with which the SP2 computers fail to authenticate with "Error 721: Remote computer not responding". This is after a successfull handshake and hangs at the authentication dialogue.
What puzzles me is that other remote computers running Win2000 connect to the rogue client without any problems. The issue is only evident in Win XP SP2.
I'm still unsure where the problem lies. I have checked, double checked and triple checked the settings on the problem client and can't find any inconsistencies. The User has permissions, the modem is configured (I assume) correctly. The fact that other Win2k machines can connect suggests the setup is ok.
The XP SP2 computers have no firewall running and I've been through the setup with the Microsoft SP2 support and they can't find the problem either. I've not finished with the Win2k support guys yet though.
I've sent a different modem out to site to see if that helps but I can't think how the hardware setup on the remote client would effect only XP SP2 and not all connecting computers.
Any Help would be very much appreciated. The problems double fold as one of the XP machines that won't connect is a clients new viewer. I need anything you can suggest no matter how trivial.
Thanks in Advance
Please say if you need any more details.