Cisco Vpn Software Error 51
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in Mac OS X instead of the CiscoVPN software. Here's a guide that tells you how to convert cisco vpn client error 51 windows 7 from CiscoVPN to the native OS X client. If you are
Cisco Vpn Client Error 51 Windows 8
running Cisco's VPNClient on Mac OSX, you might be familiar with (or tormented by) "Error 51: Unable
Cisco Vpn Client Error 51 Unable To Communicate With The Vpn Subsystem
to communicate with the VPN subsystem". The simple fix is to quit VPNClient, open a Terminal window, (Applications -> Utilities -> Terminal) and type one of the following:
Cisco Vpn Client Mac Error 51 Unable Communicate Vpn Subsystem
(for older versions) sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart (for newer versions) sudo kextload /System/Library/Extensions/CiscoVPN.kext and give your password when it asks. This will stop and start the "VPN Subsystem", or in other words restart the CiscoVPN.kext extension. Cisco seems to have problems when network adapters disappear and reappear, something that happens commonly in Wireless or Dial-up scenerios. Sometimes cisco vpn client error 56 putting a system to sleep, disconnecting an Ethernet cable or simply reconnecting your wireless will cause CiscoVPN to loose track of the network adapters on the system. Considering that CiscoVPN is typically used by telecommuters, this is an astonishing oversight on Cisco's part. The above hack should side-step all of these issues by causing the CiscoVPN to re-initialize. It makes one ask, why couldn't Cisco have just put the restart into their client? Or a better idea would be to not reinvent the wheel and use the existing IPSec VPN support in OSX! Am I missing something? EDIT: The MacWorld guys came up with a simpler way to do the same thing: sudo SystemStarter restart CiscoVPN Posted by Anders Brownworth Monday, November 13, 2006 7:25 PM Tweet Comments (269) Jeff from Chicago #1 | Friday, March 23, 2007 6:53 AM Thanks for the tip - this worked like a charm. todd from boston #2 | Thursday, March 29, 2007 10:29 AM you the man - thanks! T
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to make vpn connection. Error 56: The Cisco Systems, Inc. VPN Service has not been started. Please start this service and try again. Secure VPN Connection terminated locally by the client. Reason 403: Unable to contact http://helpdesk.ugent.be/vpn/en/faq_cisco.php?id=51 the security gateway. Secure VPN Connection terminated locally by the Client. 412: The https://discussions.apple.com/thread/3195725?start=0&tstart=0 remote peer is no longer responding. Secure VPN connection terminated locally by the client. Reason 413: User authentication failed Reason 421: Failed to establish a connection to your ISP. Cisco VPN Client displays the message "Reason 422": Lost contact with the security gateway. Check your network connection". The connection to the RoamNet VPN Gateway is no cisco vpn longer available. Secure VPN Connection terminated locally by the Client. Reason 429: Unable to resolve server address. Secure VPN Connection terminated locally by the Client. Reason 442: Failed to enable Virtual Adapter. Error 1609: An error occurred while applying security settings. Authenticated ... Error 1722: There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support cisco vpn client personnel or package vendor. (error when installing Cisco) Error 28000 (error when installing Cisco because there is still (a part of) an old installation present on the system) When installing Cisco, a 'DNE error' occurs and you are asked to restart Windows XP When starting the VPN connection, the computer shuts down (or generates a blue screen). Error 427: unknown error occurred at peer. Mac Error 51: Unable to communicate with the VPN subsystem Solution: If you are running Cisco's VPNClient on Mac OSX, you might be familiar with (or tormented by) "Error 51: Unable to communicate with the VPN subsystem". The simple fix is to quit VPNClient, open a Terminal window, (Applications -> Utilities -> Terminal) and type the following: sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart and give your password when asked to. This will stop and start the "VPN Subsystem", or in other words restart the CiscoVPN.kext extension. Cisco seems to have problems when network adapters disappear and reappear, something that happens commonly in Wireless or Dial-up scenarios. Bron: http://www.anders.com/cms/192/CiscoVPN/Error.51:.Unable.to.communicate.with top Contact Helpdesk Follow the announcements of the helpdesk on Other UGent sites: Home UGent | Minerva | Oasis ©2016Ghent University, disclaimer Paginanavigatie Helpdesk ICT UGentNet E-mail Account & password Athena & software Central disk spa
enter a title. You can not post a blank message. Please type your message and try again. buzz8976 Level 1 (0 points) Q: Cisco VPN Client Error 51 message since upgrade to Lion Since upgrading to OS X Lion I can no longer use Cisco VPN Client, I keep getting the following error message:Error 51: Unable to communicate with the VPN subsystem. Please make sure that you have at least one network interface that is currently active and has an IP address and start this application again.Please help I need remote desk top for work. MacBook Pro, Mac OS X (10.6.4) Posted on Jul 21, 2011 12:12 PM I have this question too Close Q: Cisco VPN Client Error 51 message since upgrade to Lion All replies Helpful answers by Asatoran, Asatoran Jul 21, 2011 2:00 PM in response to buzz8976 Level 4 (2,525 points) Jul 21, 2011 2:00 PM in response to buzz8976 Are you using the software client from Cisco, or OSX's built-in VPN? In my experience, almost every operating system upgrade has needed a update to the VPN client software. Have you checked if there's a newer Cisco client for your office?That said, have you tried uninstalling and reinstalling the Cisco software? Also, OSX's built-in VPN client works for many Cisco implementations, so works for a lot of people. If possible, I recommend uninstalling Cisco's software an see if you can configure OSX's VPN. I'm currently using OSX's VPN to a Cisco ASA 5510 with SecureID authentication. 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 Asatoran Level 1 (0 points) Jul 21, 2011 2:12 PM in response to Asatoran Hi AsatoranI did as you suggested I uninstalled it downloaded this version: VPN Client 4.9 for Mac from this site: http://www.helpdesk.ugent.be/vpn/en/akkoord.phpAnd it seems to be working perfectly now.Thanks Helpful (0) Reply options Link to this post by wickdillon, wickdillon Jul 30, 2011 1:43 PM in response to buzz8976 Level 1 (10 points) Jul 30, 2011 1:43 PM in response to buzz8976 Check out this link: When going to a 64 bit OS (For me, it broke with Lion) the Cisco VPN no longer works because it