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Vpn Error 51 Mac Os 10.6.8

If you are having this issue, try running Software Update and make sure you have the latest release and see if that helps. I then rebooted the computer and voila - Cisco VPN loaded like it always had before, no Error 51! If the group password is encrypted, copy the enc password and paste it into: http://www.unix-ag.uni-kl.de/~massar/bin/cisco-decode and you will get the decoded password. Thanks.

Neeraj from Austin #31 | Thursday, November 22, 2007 7:59 AM sorry.. Still not working. We didn't make any effort to resolve, opting instead to try again on my MBP, which is wirelessly connected to my router (only these two machines in the LAN) and succeeded. Cristi from Bucharest, Romania #81 | Thursday, June 12, 2008 3:03 PM Whew, that saved my day, or night so to say. https://discussions.apple.com/thread/3195725?start=0&tstart=0

Because on the MBP SL boots into 32-bit by default, but the default is to boot into the 64-bit kernel on a MacPro. Harald Walker from Almere / The Netherlands #67 | Sunday, April 6, 2008 5:03 AM Thank you for the post. My problem is while VPN works fine with my wired and wireless (802.11g) networks it won't connect when I use a dialup connection. Edd from Belgrade, Serbia #149 | Thursday, July 16, 2009 10:11 AM thank you, that helped!

Is there a fix for this that anyone is aware of? [ Reply to This | # ] A fix for 'Error 51' with the Cisco VPN Client Authored by: jnyfeler I am on a MacBook 10.4.11 with 4.9.01 (0080) VPN client zm from san jose, ca #106 | Monday, September 15, 2008 12:39 AM this ROCKS. Even better! Using Snow Leopard and the sudo kextload command, I was able to restart the VPN client.

I did however confirm that my internet sharing was disabled which didn't help (I'd already tried repairing permissions and restarting) but then I stopped Personal File Sharing, Personal Web Sharing and It turns out my MacBook Pro came set up to boot with the 64 bit kernel. Thanks a lot, worked really well! see here Any thoughts or ideas?

Made a fixvpn alias for this, and it worked like a charm on Leopard 10.5.1 :-) Thanks so much! - Erik Balrob from A Kiwi in Utah #41 | Thursday, December Thanks in advance! Any other thoughts? When this occurs, I definitely have an active network interface that has an IP address, so it's quite clearly not an issue with my machine's settings.

i hated having to reboot just because of this stupid error. https://supportforums.cisco.com/discussion/11245456/mac-os-x-lion-and-error-51-help-needed-asap-please Just wow...what are the odds? MN from Cville from Cville #65 | Friday, April 4, 2008 12:37 PM Awesome little hack...solved this annoying problem in a cinch. Your instructions were wonderfully easy and I now have the VPN working again.

I can connect to my vpn ok, but then I lose access to the internet. it saves me a lot of reboots now. The solution: hold 3 and 2 simultaneously during startup to boot using the 32-bit kernel (link to Apple support article). http://adam.shand.net/iki/2008/howto_repair_the_cisco_vpn_client/ It's great to see all the suggestions here as well, thanks!

It would make life much easier. Fixed. Eduardo P.J. Steve from Minneapolis #4 | Friday, May 4, 2007 5:30 PM Nice - works to correct the same issue when running Windows on a Mac (restart the Cisco VPN Service).

I have Loepard on my desktop but not my laptop yet and my desktop is at work so I can't test the VPN. You can check before exiting the preferences by simply highlighting some other sharing option then re-highlighting the Internet Sharing option. Here's the link to the installation of the Cisco VPN client that I'm using (4.9.0180).

I heard about 230 build supports 64 bit mode.

Worked great. Worked a treat as it had stopped working when i installed Snow Leopard.. Anders from Cambridge, MA #223 | Tuesday, April 19, 2011 7:45 AM A new flavor of this error seems to be showing up. Visit other IDG sites: Select One CIO Computerworld IDG Connect CSO DEMO GamePro Games.net InfoWorld ITworld JavaWorld LinuxWorld Macworld MacUser Network World PC World The Industry Standard IDG Knowledge Hub IDG

openvpn from #120 | Tuesday, October 21, 2008 1:36 AM I recently launched openvpn server for remote clients. What finally cut it was to re-install, and after that everything was ok. In other words, I simply turned the services off and on, and that somehow allowed VPN Client to connect and re-connect subsequently with my required services running. Unlike the Cisco website which made me register and then told me that I couldn't access the page that would explain the error messages.

By the way, CiscoVPN keeps config files in /etc/opt/cisco-vpn/ so to keep all your configurations, back that directory up and restore it after you re-install CiscoVPN. thewhell from buffalo, ny #182 | Monday, April 12, 2010 8:05 AM Awesome thanks!!! Karen F from Gaithersburg MD #215 | Saturday, February 19, 2011 2:14 PM I don't understand _why_ it works, but it works. Just keep typing and hit enter when done.

A while back, after getting "51'd" again, I went in search of a better solution -- and I found one. Again, Thanks. Awesome. I got the output: Stopping Cisco Systems VPN Driver kextunload: unload kext /System/Library/Extensions/CiscoVPN.kext failed Starting Cisco Systems VPN Driver kld(): Undefined symbols: __FREE __MALLOC _apple_hwcksum_rx _apple_hwcksum_tx _dlil_attach_interface_filter _dlil_detach_filter _dlil_inject_if_input _dlil_inject_if_output _ifnet

Kelly O from Moorestown, NJ #138 | Wednesday, February 11, 2009 10:47 AM Thanks. George Coller from Austin, TX #26 | Friday, November 16, 2007 1:39 PM Cool, glad I found this! Restarting my computer is not something I want to spend my time doing, since I usually put my computer to sleep. Any other suggestions?

Apparently this can be a problem with any mac using a 64 bit kernel. Thanks!! todd from boston #2 | Thursday, March 29, 2007 10:29 AM you the man - thanks! Add the following line to your .bash_profile alias resetcisco='sudo SystemStarter restart CiscoVPN' [ Reply to This | # ] A fix for 'Error 51' with the Cisco VPN Client Authored by:

When I create a new VPN connection (System Prefernces/Network) and I choose CISCO IPSEC, I don't see any additional options for UDP selection. Even though the installer claims that I have to reboot, I've always found that just reinstalling brings the VPN client back to life. [ Reply to This | # ] A Daniel Gauthier from Missoula MT 59808 #93 | Wednesday, July 23, 2008 10:50 AM I encountered another cause of this problem. Cacasodo from #7 | Saturday, May 12, 2007 9:30 PM Didn't work for me unfortunately, using a wired or wireless connection.

There is, apparently, a more permanent fix, but I'm a bit nervous to try it. More Mac Sites: Macworld MacUser iPhone Central Submit Hint • Search • The Forums • Links • Stats • Polls • Headlines • RSS 14,000 hints and counting!