How to fix Reason 442 error using Cisco VPN Client in Windows 7

Among all computers I have installed Cisco VPN Client, my Windows 7 is the only one that had the problem connecting to the remote VPN server. I kept getting this Reason 442 message telling the connection terminated locally by the client pretty much every time when I wanted to use it.

Secure VPN Connection terminated locally by the client.
Reason 442: Failed to enable Virtual Adapter

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It was really annoying because if I wanted to use it at home I would have to fire up one of my Virtual machine and use the VPN client from there. I always thought it might just be my computer that has got too many things loaded and didn’t want to cooperate with Cisco until I found the fix today. And the fix was so easy that I wondered how come I never thought about it.

It was all Internet Connection Sharing (ICS) service‘s fault. If you had this same problem as mine, simply:

1. Stop Cisco Systems, Inc. VPN Service;

2. Stop and disable Internet Connection Sharing (ICS) Service;

3. Restart Cisco System, Inc. VPN Service.

Launch VPN Client again, and the problem is gone.

Note that I am running Cisco Systems VPN Client version 5.0.07.0290 on Windows 7 Professional 64-bit edition.

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