Manually Uninstall the VPN Client

Complete these steps:

1. From your desktop, choose Start > Run and type regedit.
Note: Make sure that no anti-virus software or firewalls are enabled.

2. Remove the key at HKEY_LOCAL_MACHINE > SOFTWARE > Cisco Systems > VPN Client.


3. Remove the keys at HKEY_LOCAL_MACHINE > SOFTWARE > Deterministic Networks.
Note: Sometimes the system does not allow you to remove this key.


4. Remove the keys at HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > Uninstall > {5624c000-b109-11d4-9db4-00e0290fcac5}. 


5. Remove the keys at HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > RunOnce > CISCOREBOOTFLAG.

6. In order to stop the VPN deamon process, press Ctrl+Alt+Del and select Task Manager. Then, navigate to cvpnd.exe, right-click and choose End Process.


7. Delete these directories if the Cisco VPN Client is installed in the default directories of the Windows machine:
◦ C:\Program Files\Cisco Systems\VPN Client
◦ C:\Program Files\Common Files\Deterministic Networks

8. Delete all the old Deterministic NDIS Extender (DNE) files:
◦ dne2000.sys from %SystemRoot%\system32\drivers
◦ dne2000m.inf and dne2000m.pnf from %SystemRoot%\inf
◦ The Original Equipment Manufacturer (OEM) enumerations of the dne2000.inf and dne2000.pnf files. The OEM enumeration .inf file is a file called oem.inf. For example, files could be called oem2.inf and oem2.pnf.
Note: Be careful to remove only OEM files from the DNE.
◦ dneinobj.dll from %SystemRoot%\system32. You might need to reboot before you can remove this file.

9. Delete the cvpndrv.sys or cvpndrva.sys file from %SystemRoot%\system32\drivers.

10. Reboot the machine and cancel the installation of network adapters.

11. Find the CSGina.dll file in the system32 folder and rename it CSGina.old.

12. Reboot the machine and install the latest version of the Cisco VPN Client.
Note: Even if a manual uninstall fails after you complete this procedure, remove the setup.exe file from the temp files directory because it can trigger setup to run again.
Complete these steps in order to remove Deterministic Network Enhancer:
1. Right-click My Network Places and choose Properties.
2. Right-click Local Area Connection and choose Properties.
3. Either uninstall or uncheck Deterministic Network Enhancer.