VPN Client install - Error 27850

Unanswered Question
May 3rd, 2010


Attempting to install VPN Client on a WinXP SP3 box.  First attempted while logged into machine using AD credentials resulted in the following message:

Error 27850. Unable to manage networking component.  Operating system corruption may be preventing installation.

Did a quick search and one discussion indicated that the Windows AD Group Policies may be the problem.  Makes sense.

But then I logged into the machine using local account Administrator - same result.

Any ideas?


I have this problem too.
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iholdings Mon, 05/03/2010 - 09:18

It never "fully" installs the client - but if I mouse-over Start | Programs - it says a new application has been installed.

I have tried to turn around and re-install - but the same message pops up.

Do you think I will still need to "manually" un-install the client - even though the original install never took?

Federico Coto F... Mon, 05/03/2010 - 12:20

Even if the VPN client seemed to have never completed the installation, if the VPN does not work and won't let you remove it, the best way is to manually remove it using the link posted before.


r4farooqui Mon, 05/03/2010 - 16:01


I am having same Error msg on Win 7 x64 and my client version is vpnclient-winx64-msi- There are no footprint of Installation left when you Press OK button, it rollback failed installation. Please see attached snapshot of installtion error.

I have also tried in Run as Administrator but same Error msg. Any idea how to fix this issue?


cedgrenon1 Wed, 01/27/2016 - 19:42


I was having the same issue, Error 27850 on a Win 7 x64 with client version vpnclient-winx64-msi-

I found out this error was linked to another issue. I could connect on to the internet fine but I had no Local Area Connection adapter showing up in the Control Panel | Network and Internet| Network Connections.

I found the solution to the missing adaptor on the following website:


Just in case that site ever get down, I'm quoting the essential there. 

This is will work if you have the Error 27850 because you have no Local Area Connection adapter 

  1. Click Start , click Run , type regedit , and then press ENTER.
  2. Locate and then click the following registry subkey:
  3. Right-click this subkey, click Export , and then save the selected branch in a file.
  4. Click the Network subkey again, and then delete the Config entry. Do not delete the Network subkey. The Config entry will be reconstructed when you restart the computer.
  5. Restart the computer. You may have to manually turn off the computer.

The config key is re-created on the next boot up! :)

On the next boot up, my Local Area Connection adapter was up in the Control Panel | Network and Internet | Network Connections and I was able to install the Cisco VPN client just fine without any Error 27850.


richarpt1 Wed, 05/05/2010 - 14:21

I just figured this one out.  The issue is that you cannot add new services, likely you are running multiple virtual machine

products and/or multiple VPN solutions.  I am not exactly sure why, but Windows is only allowing a certain number of services/filters.

filters.  See if you are able to recreate the following for a specific network adapter.  Once I removed one of the VM filters (Microsoft VM in my case, the install was able to proceed successfully).

joservazquez Tue, 05/18/2010 - 07:49

Don't know if this would apply to XP ( would need to rebuild a system to try it) but for Windows 7 users ( in my case x64)

The maximum number of network  filter drivers in Windows 7 is 14.

By default, it is set to 8

Can be increased to 14 in the the following registry key:


Came across this in trying to fix an issue with VirtualBox & Bridged NIC's & uninstalled the Cisco VPN which Fixed that issue but then upon reinstall game me the error in this post which led me to the following post:


So far I have win7x64 with CiscoVPN, OpenVPN, XPMode, VirtualBox, and Symantec EPP Firewall, and appear OK, for now.

Hope this is helpful


fernandosilva Sat, 03/19/2011 - 16:11

It works with me, win 7 x64.

I had the 8 filters drivers in use and put a value of 10 and is working.

Thanks Jose  Vazquez


amstarner Mon, 03/28/2011 - 07:51

Jose's Reg key fix worked for me, as I too was having this issue installing on Win 7 64Bit.

benstephens_2 Wed, 02/29/2012 - 11:06

Yes! Thanks for the fix. I incresed to 14.

How does one figure out that the filter drivers could be the cause anyways?!

Thanks again!

k-stanford Thu, 03/15/2012 - 05:14

Thanks Jose. Increased my setting to 10 and now working on 64bit Win7 with VirtualBox, VMWare Player.

MarcOfBouloc_2 Thu, 06/25/2015 - 02:34


That also worked fine for me. Thanks a lot for this tip :-)

(with win7 64 bit)

alltraders001 Mon, 06/20/2011 - 06:56

Fantastic work Jose,

Worked perfectly for me. Solved another network driver install issue also. Well done and thanks for documenting the answer.


raphaelemerick Thu, 07/19/2012 - 05:18

Thanks for the info, very helpful. It happened to me the same error and unable to solve by changing the registry key from 8 to 14. Thanks.

IfmgcyvaQp8ZPj3ujmzm Tue, 07/15/2014 - 05:50

The solution for me was to install DNE 64bit.
    ftp://files.citrix.com/dneupdate.msi for 32-bit
    ftp://files.citrix.com/dneupdate64.msi for 64-bit

After installing this, the Cisco VPN software installed without issue.

As a side note, I had an issue after installing the VPN where it would hang at 'Securing communications channel' ... In my case, I have two Cisco VPN Virtual Adapters under network connections (this could be my issue). If I disable the old one, then enable the new one while the software hangs at 'Securing communications channel', it will connect.

I am running Windows 8.1.


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