Cisco AnyConnect VPN problems on XP

I have been confronted to several different problems with this somewhat temperamental VPN client.

There are some things that can be done to try to repair it when the connection cannot be established. The full reference can be found on Cisco’s site.

But from experience, here are some of the most common problems:

  • Start -> Run, type services.msc and press Enter. Locate the following services and make sure they are all started properly: IPSEC Services, DNS Client, Cisco AnyConnect VPN Agent
  • If you use Windows Firewall, add an exception for Cisco AnyConnect VPN client
  • Bonjour from Apple can interfere with Cisco’s AnyConnect VPN client. If you don’t need it, it is best to uninstall it. Even if you need it, un-install it, reboot and try to see if this is the problem.

Now, if none of those sorts it out try this:

  1. On a command prompt, run net stop CryptSvc . Then run esentutl /p %systemroot%\System32\catroot2\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\catdb and press OK when asked. Reboot. Now try to reconnect.
  2. On a command prompt, runĀ net stop CryptSvc . Then from Windows Explorer, rename the directory WINDOWS\System32\catroot2 to WINDOWS\System32\catroot2_prev. Reboot. Now try to reconnect.

Unfortunately, this is not always enough. It has been reported that some people manage to get it working after step 1, some after step 2, some after step 1, 2 and then 1 again, while some other do not get it resolved at all…

If you know of any other things to try, please let me know and I will add them to this entry.

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