I am experiencing a strange issue with some laptops (specifcally they are Toshiba Tecra). These laptops are running Windows XP Professional, and are tied into a domain that consists of a Windows 2003 R2 Standard actiing as the DC, this server also has Exchange 2003 running on it and hosts email.
The laptops are setup to access a Cisco PIX 501 using the Cisco VPN Client Sofware. For some reason, there is a problem occurring that if the Cisco VPN Client Sofware is loaded on to the Toshibs laptops (does not matter which one), it causes a conflict with trying to access any exchange mailbox through Outlook 2003. Basically the conflict is the simple matter of not being able to open or access the mailbox, it acts as though it can't speak with the Exchange Server. If I uninstall the Cisco VPN Client Software from the laptop, everything is fine, the problem completely disappears.
I have tried different versions of the Cisco VPN Client, and so far nothing has proven to work. I tried versions 4.6, 4.7, 5.01, etc. So, so far the solution is to leave the Cisco VPN Client software uninstalled from all my laptops. This is not a viable solution though because now they cannot access the network through the VPN when they are taken off-site after hours.
What I'm trying to determine, or see if this might be an issue, if there is some sort of conflict with Sever 2003 R2, and Cisco VPN Client Software. Or maybe it's an issue with Exchange 2003 Server and the Cisco VPN Client Software. This has to be one of the most confusing issues I have seen in a long time. Maybe it's an issue with the Toshiba OEM Windows XP Professional version? I have not heard of such a problem before.
Thanks for your help.