Latest Microsoft Feb. 2015 patch breaks AnyConnect SMC

[Todd Anderson]

Hi all,

I just wanted to give the community a heads up in regards to the latest February 2015 Microsoft patches.KB3023607 makes some AnyConnect clients give the "Failed to initialize connection subsystem" error.  You can fix this here:

http://christierney.com/2015/02/11/cisco-anyconnect-failed-to-initialize-connection-subsystem/

Also updated in the article:

This issue was introduced by KB# 3023607: Secure Channel cumulative update changes TLS protocol renegotiation and fallback behavior (https://support.microsoft.com/kb/3023607)

Included with Microsoft Security Bulletin MS15-009 – Critical Security Update for Internet Explorer (3034682)

This issue should also affect Windows 7 user with IE 11, but no reports of failure have been seen yet.”

[Peter Davis]

We reached out directly to Microsoft for you. They have stated that MS15-009 would need to be reapplied and that the fix due out in their March patch (date subject to change), only addresses this specific issue.

[t-rubio]

Thanks so much for the clarification.  it much appreciated.

[Peter Davis]

Microsoft has released a permanent fix for this issue as part of their Windows 8.1 03/10/15 update.

See: http://support.microsoft.com/kb/3040335 for more details

The workarounds can be removed after applying the update and restarting your Windows 8.1 machine.