Cisco VPN Error 28005

Hi all,

I am getting an error when trying to install Cisco VPN Error 28005 "A previous version of the client was uninstalled but the computer was not re-booted. You must re-boot ...."

When the computer re-boots it goes through thesame process again and goes into an infinite loop of this Error 28005.

Is there any way to prevent this error and allow the installation to complete?

Many thanks in advance, Derek

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If the previou version of the vpn client still listed in "Control Panel/Add and Remove programes", you may want to download "Windows Installer Cleanup utility" to uninstall that first.

If not listed in there, simply delete the following registry key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\CISCOR EBOOTFLAG]

Then try reinstalling again.


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Manually Removing the Cisco MSI VPN Client

Removing the Cisco Virtual Adapter

VAInstaller r CS_VirtA

If the above command failed to remove Virtual Adapter, do the following:


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class \{4D36E972-E325-11CE-BFC1-08002bE10318} This is the Network adapters part of the registry. Under this you will see keys named "0001 0002 ...." and so on. If you look at each key you will find a "Cisco Systems VPN Adapter".

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network \{4D36E972-E325-11CE-BFC1-08002BE10318}\Descriptions

There may be others. Search through your registry for "VPN Adapter" and "cvirta" and you should catch everything. You should try to use the vainstaller to do the work but as a last resort go through the registry.

Reboot the machine.

Open REGEDIT Remove the following keys:

HKEY_LOCAL_MACHINE \SOFTWARE\Cisco Systems\VPN Client HKEY_LOCAL_MACHINE \SOFTWARE\Deterministic Networks Sometimes the system might not allow you to delete this key.

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion \Uninstall\{3E5562ED-69AB-4CEC-91E2-64E18EC5ACC6}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer \UserData\S-1-5-18\Products\DE2655E3BA96CEC4192E461EE85CCA6C

Delete the following directory:

C:\Program Files\Cisco Systems\VPN Client C:\Program Files\Common Files\Deterministic Networks

Delete all the old DNE files

dne2000.sys from %SystemRoot%\system32\drivers dne2000m.inf and dne2000m.pnf from %SystemRoot%\inf The oem enumeration of the dne2000.inf and .pnf files. The OEM enumeration .inf file is a file called OEM (some numeric value). inf. For example oem2.inf and oem2.pnf. Be careful to only remove OEM files from DNE.

dneinobj.dll from %SystemRoot%\system32. You may need to reboot before this file can be removed.

Delete the following file:

cvpndrv.sys from %SystemRoot%\system32\drivers

Reboot the machine.

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Hi folks,

Many thanks for your advice. Tried everything listed. the windows installer cleanup does see Cisco VPN and the runonce flag for it does not exist.

I also went through the manual process to remove registry entries and files from the hard disk, but it still thinks it has a previous version of Cisco VPN installed. I just can't figure out what it is that is triggering this. Any other ideas would be much appreciated

TIA, Derek

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