Cisco VPN Install Error 27850

One of my clients recently had an issue with their MYOB AO software, which requires a Cisco VPN client to be installed to complete certain tasks.

For some reason, it had removed itself, and when attempting to reinstall manually, I encountered the following error in Windows 7 x64:

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

This led me to the following post.
http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/4deb27fc-33ce-4fc0-a26f-3fec5b57733d

The long and short of it is a registry edit.

Locate HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\MaxNumFilters

Default: 8

Maximum setting: 14

I have bumped this up to 14 for my client, and it's now successfully working.