6

For some reason every few minutes Cisco anyconnect VPN client keeps disconnecting and reconnecting.

Example log:

  4:28:43 PM    Connected to myaccess.oraclevpn.com.
     4:34:10 PM    Reconnecting to myaccess.oraclevpn.com...
     4:34:10 PM    Establishing VPN - Examining system...
     4:34:10 PM    Establishing VPN - Activating VPN adapter...
     4:34:10 PM    Establishing VPN - Configuring system...
     4:34:10 PM    Establishing VPN...
     4:34:10 PM    Connected to myaccess.oraclevpn.com.
     4:35:30 PM    Reconnecting to myaccess.oraclevpn.com...
     4:35:30 PM    Establishing VPN - Examining system...
     4:35:30 PM    Establishing VPN - Activating VPN adapter...
     4:35:30 PM    Establishing VPN - Configuring system...
     4:35:30 PM    Establishing VPN...
     4:35:30 PM    Connected to myaccess.oraclevpn.com.
     4:49:35 PM    Reconnecting to myaccess.oraclevpn.com...
     4:49:36 PM    Establishing VPN - Examining system...
     4:49:36 PM    Establishing VPN - Activating VPN adapter...
     4:49:36 PM    Establishing VPN - Configuring system...
     4:49:36 PM    Establishing VPN...
     4:49:36 PM    Connected to myaccess.oraclevpn.com.
     5:19:20 PM    Reconnecting to myaccess.oraclevpn.com...
     5:19:20 PM    Establishing VPN - Examining system...
     5:19:20 PM    Establishing VPN - Activating VPN adapter...
     5:19:20 PM    Establishing VPN - Configuring system...
     5:19:20 PM    Establishing VPN...
     5:19:20 PM    Connected to myaccess.oraclevpn.com.
     5:21:46 PM    Reconnecting to myaccess.oraclevpn.com...
     5:21:46 PM    Establishing VPN - Examining system...
     5:21:46 PM    Establishing VPN - Activating VPN adapter...
     5:21:46 PM    Establishing VPN - Configuring system...
     5:21:46 PM    Establishing VPN...
     5:21:46 PM    Connected to myaccess.oraclevpn.com.
     5:27:31 PM    Reconnecting to myaccess.oraclevpn.com...
     5:27:31 PM    Establishing VPN - Examining system...
     5:27:31 PM    Establishing VPN - Activating VPN adapter...
     5:27:31 PM    Establishing VPN - Configuring system...
     5:27:31 PM    Establishing VPN...

I am on latest 4.6.01103

1
  • Reconnects could happen for many reasons. For example, when a new n/w interface comes up or when OS reports interface configuration change to AnyConnect etc., Are you seeing this issue on Windows 10 ? If yes, does your device have capability to use cellular network ? – Mahesh Jun 3 '19 at 4:11
2

For me what solved this is to work only on wifi or only on wired ethernet connection (I disabled the wifi adapter (in Control Panel\All Control Panel Items\Network Connections in win10)

Now everything is stable!

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  • 1
    You saved my day, i was a step closer to burn the network! – Cristiano Casciotti Jul 23 '19 at 13:53
  • I didn't succeed with this option. I am connected to wifi and have disabled wired connection. However, every other minute VPN gets disconnected. Are there some other thoughts? – pnv Jul 25 '19 at 6:22
  • don't know what if wlan or vEthernet deactivation @joeBun helped..but it's stable now ! – WhileTrueSleep May 7 '20 at 15:21
2

I had the same issue and inspired by thedrs answer, I disabled all network adapters I didn't need for the VPN connection.

It turned out that the Hyper-V machine (and the corresponding virtual Ethernet adapter) I had running were causing it. After shutting down the virtual machine, no more reconnects occurred.

2
  • 1
    Of course, not Hyper-V is the problem, because other Networking SW like CheckPoint or even the free OpenVPN SW works stable with it. It's Cisco who does not do it's homework and do not integrate it's "tools" into Windows 10 as it should be. – Tom Dec 3 '19 at 19:11
  • It worked for me but disabling Hyper V in windows features and restarting my machine – lost_in_magento Aug 25 '20 at 8:50

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