tried reinstalling and everything.. I would be very glad, if someone has suggestions what to do. Florens from Germany TŁbingen #146 | Tuesday, April 21, 2009 8:09 PM So i fixed the problem: (Running Mac OS X 10.4.11) First i uninstalled current version with: terminal: sudo /usr/local/bin/vpn_uninstall Worked great!
Disable all Parallels network adapters in the network preferences. Sorry, I don't have a suggestion for you outside of reinstalling the Cisco VPN software. Where can I download the Cisco AnyConnect VPN Client?A.Open theCisco Support Page.Click Download Software.Choose Products > Security > Virtual Private Networks (VPN) > Cisco VPN Clients.For version 3.0, chooseCisco AnyConnect Secure Launch VPN client again. https://coolestguidesontheplanet.com/cisco-error-51-unable-communicate-vpn-subsystem/
nikolaus heger from #98 | Saturday, August 9, 2008 8:25 AM I have to restart Cisco VPN all the time - so I already knew your tip. Works like a charm and best spent $20 in a long time. [ Reply to This | # ] I've had the same problem Authored by: porkchop_d_clown on Sep 02, '08 Otherwise, you may need to uninstall Cisco VPN Client, and then download and install it again. You're the man!!!
Karen F from Gaithersburg MD #215 | Saturday, February 19, 2011 2:14 PM I don't understand _why_ it works, but it works. Tried everything above to no avail - including a post from another forum recommending to turn off web sharing. sudo ifconfig fw0 down sudo kextload /System/Library/Extensions/CiscoVPN.kext sanya from kyiv/Ukraine #197 | Monday, September 27, 2010 5:55 AM Man, it is no problem with 32-bit macosx mode but what to launch i hated having to reboot just because of this stupid error.
http://www.shimoapp.com/ (If you need cisco-vpn-profiles, you have to install cisco-vpn-client first, otherwise it won't run!) Jay from Around the world #147 | Wednesday, April 22, 2009 3:02 AM Just adding my Nothing will get rid of this error message, and it is quite frustrating. Saves a lot of time and frustration. Bonuses Thanks!
Thanks! I am very happy with how openvpn works - it is stable, fast and easy. Then execute: $ sudo ifconfig fw0 down You may have to execute the command twice. rutger from holland #10 | Wednesday, June 20, 2007 3:39 PM how do i solve this issue in windows?
Events Events Community CornerAwards & Recognition Behind the Scenes Feedback Forum Cisco Certifications Cisco Press Caf√© Cisco On Demand Support & Downloads Community Resources Security Alerts Security Alerts News News Video http://www.cisco.com/c/en/us/support/docs/security/anyconnect-secure-mobility-client/116080-productqanda-vpnclients-00.html The VPN driver only has i386 and PPC extensions, not x86_64 extensions. A fix for 'Error 51' with the Cisco VPN Client Sep 02, '08 07:30:03AM • Contributed by: robg To connect to Macworld's servers, I use the Cisco VPN Client (version 4.9.01). I googled the error message and was directed to your site.
Mika from #16 | Thursday, August 9, 2007 4:57 AM Worked Perfectly. Cisco VPN is still working fine. Restarted, ran Disk Utility, tried the restart via Terminal again. thank you so much.
Events Experts Bureau Events Community Corner Awards & Recognition Behind the Scenes Feedback Forum Cisco Certifications Cisco Press Caf√© Cisco On Demand Support & Downloads Login | Register Search form Search Shaun from London, UK #183 | Monday, April 19, 2010 12:42 AM Thanks, did just the trick! I've passed this one around work. What should I do?A.Refer to Cisco IPsec VPN Client on MAC OS X generates the error "Error 51: Unable to communicate with the VPN subsystem".Q.
As of Mac OS X 10.6, there is a built-in IPSec VPN feature, so you really don't need any third party software anymore. Thanks. Thanks for posting it! How Did I Miss This?
And that sucks. sahrawi from illinois #165 | Saturday, November 7, 2009 5:09 AM it says command not found! Alex from Devils Lake ND USA #237 | Monday, August 8, 2011 4:28 AM MacBook Pro 15, OS 10.5.8 I ran into the "argument missing: error 51: unable to communicate with My client's server tech set me up with Cisco VPN Client v4.9.01 (8080).
A lot less technical but it has worked for me... [ Reply to This | # ] Search Advanced From our Sponsor... I tried all the suggestions until I found one that worked, Thank You! Be thankful they even bothered to make it for Mac. You're right, it's not installed as a Startup Item.
Allen from South Africa #239 | Friday, August 12, 2011 7:04 AM Hi, Thanks for the info on http://anders.com/guides/native-cisco-vpn-on-mac-os-x/ I have now switched to native, since the Cisco client never worked Bert Woudwijk from Rotterdam, The Netherlands #132 | Tuesday, January 6, 2009 9:57 PM I have error 51 with Windows XP. With OSX 10.6.8 and 10.7. (And on my iPad as well. ) Helpful (0) Reply options Link to this post by buzz8976, buzz8976 Jul 21, 2011 2:12 PM in response to Fixed.
After getting nowhere with my IT person, Apple and Cisco, I somehow noticed in my finder window a "Devices" folder that had been opened out so I could see the sub Stefano from Italy #34 | Friday, November 23, 2007 11:32 PM I've had the same problem as all you I've solved with sudo ifconfig fw0 down found at http://www.cb1inc.com/2007/06/11/fixing-cisco-vpn-client-4.9-with-parallels-desktop-3.0-on-mac-os-x Neeraj from I'm on a brand new macbook purchased June 3, 2009.