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Cannot access Outlook exchange mailboxes using Cisco VPN and Pantech UM175 modem

Posted on 2009-04-28
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I have many users accessing exchange mailboxes via Cisco VPN using a Verizon aircard USING WINDOWS XP. But we cannot make this work with Vista. The Cisco VPN works fine and they can access all other files on our servers, but when they connect to Outlook, they get a "trying to connect" message that never goes away. This problem is true using various models of Dell laptop.
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Question by:Don-M
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by:Sourabh-Excahnge
ID: 24254495
once you are connected with your domain VPN check if your are able to get the share of exchange server. using \\exchange server name from run
try and run this start - run - control keymgr.dll and if you get any cashed password please remove those
and please chaec the network bindings on the client machine
Control Panel\Network Connections
got to advance and under advance advance settings and check the internal NIC is on the top
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Don-M earned 0 total points
ID: 24427179
After four hours with Verizon tech support and only three with Cisco tech support, I have the answer, and it was a two-part solution. First, the Verizon bug: To use VZ Access Manager with Vista (on any of four Dell machines I tried), you need to use it in the NDIS Mode. Otherwise, every time you disconnect from the Verizon network, you must reboot before you can connect again. Running in NDIS mode resolves that, but it causes a new problem with the Cisco VPN Client for Vista. Running in NDIS mode resets the order of the network connections in Windows. In addition to the VZ dial up connection (which is created when you install the software), you now have a VZ LAN connection, and Windows is set to use that to reach the internet. That's fine if you don't need to access servers on your local network using internal IP addresses (as is required for using an Outlook Exchange mailbox). If you do need to access an Exchange server using an internal IP, then you must reset the order in which network connections are attempted and make the Cisco VPN Client be the first choice. That's all it takes. Now you can access an Exchange mail server via a Verizon USB modem or aircard, via a Cisco VPN Client.
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