Cisco Anyconnect: Failed to initialize connection subsystem windows update

UPDATE: You can use kb3023607


This issue was introduced by windows update KB3023607 and KB3034682 and KB3021952

fix1 (work for me)
uninstall KB3023607, KB3034682 , KB3021952
reinstall the cisco anyconnect client (I used version 3.1.06079)

fix option 2:

  1. Close the Cisco AnyConnect Window and the taskbar mini-icon
  2. Right click vpnui.exe in the “Cisco AnyConnect Secure Mobility Client” folder. (I have it in “C:\Program Files (x86)\Cisco\Cisco AnyConnect Secure Mobility Client\”
  3. Click on the “Run compatibility troubleshooter” button
  4. Choose “Try recommended settings”.
  5. The wizard suggests Windows 8 compatibility.
  6. Click “Test Program”.  This will open the program.
  7. Close


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