Here is a note I received from Cisco:
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Is this being installed on a 64bit machine? If yes - stop, we don't support
64bit.
Are you installing this on any version other then RTM? If yes - Do a clean
install of Vista RTM before installing the client.
Are you installing this on an upgraded installation of Vista? If yes - Do a
clean install of Vista RTM before installing the client.
Did you run the vpnclient_setup.msi file to install the client? If yes -
Rerun the installer using the downloaded
vpnclient-win-msi-<version>-k9-x86.exe or vpnclient_setup.exe. Currently the
..MSI file isn't Vista compatible.
Is the client hanging at "securing network connection"? Ensure that your
Virtual Adapter is categorized as a "Public" network rather than "Private".
This can be changed in the "Network and Share Center".
If you are getting an error message saying that the client is unable to
enable the virtual adapter do the following:
1. Check to see if the Virtual Adapter is installed. Open Device Manager and
look under Networking to verify if the Virtual Adapter is installed.
If not run the following command in the VPN Client directory:
vainstaller.exe i "C:\Program Files\Cisco Systems\VPN
Client\setup\netcvirta.inf" CS_VirtA
If this doesn't show the Virtual Adapter, uninstall the client and
reinstall the client with MSI logging enabled. See below for info. Then
email the MSI log and the DNE log to (e-mail address removed).
2. Manually enable the Virtual Adapter and attempt to connect. If the
adapter will not enable do the following:
If this doesn't show the Virtual Adapter, uninstall the client and
reinstall the client with MSI logging enabled. See below for info. Then
email the MSI log and the DNE log to (e-mail address removed).
Are you getting a firewall error message and being disconnected? Vista
client currently doesn't install the integrated firewall, disable or create
a new group that does not check for the firewall on your headend.
Additional things to keep in mind:
Client currently does not support certificate authentication, Start Before
Login, integrated firewall, 64bit, .MSI and logging is limited to file only
and will not show up in the display window.
To enable MSI logging please see:
http://support.microsoft.com/kb/223300
The DNEinst.log is located in: c:\windows\temp\dneinst.log
To enable Verbose logging of the client for troubleshooting connection
related issues do the following:
1. Open the GUI and enable logging. Then close the GUI.
2. Open the vpnclient.ini file located in c:\program files\cisco systems\vpn
client\vpnclient.ini and change the following loglevels to 15, IPSec, CVPND
and IKE. Save and close the file.
3. Open the GUI and attempt to connect. Once you have run into the issue
close the GUI and send the logs in c:\program files\cisco systems\vpn
client\logs\* to (e-mail address removed).
At minimum try the following before contacting (e-mail address removed):
Reinstalled the client, if the problem persists reinstall Vista RTM cleanly
then the client and see if the problem still persists.
After reinstalling the client go ahead and email (e-mail address removed) with
the information regarding the issue. We do require the problems to be
reproducible which means reinstalling Vista cleanly and then the client and
seeing if the problem still persists.
Please include in your email to (e-mail address removed) the following:
State the problem, and the steps you took to run into the problem.
What version of Vista and the client you have installed. ie Vista Business
32bit.
Steps you have taken to troubleshoot.
Install log and DNE log.
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