Cisco Anyconnect Mac Sierra 2017
Due to new security features in macOS High Sierra, 10.13, users will have to approve the Cisco System Extension before the software will be fully functional.
Additional information about how kernel extensions are managed can be found on Apple's website:
During the upgrade process, you will get a System Extension Blocked pop-up message. Click on Open Security Preferences:
Cisco Anyconnect Mac Sierra
Hello, I Have been receiving a 'Posture Assessment Failed: Hostscan Initialize error' when running Cisco AnyConnect on OS X Sierra OS X Version: 10.12.2 AnyConnect Version: 4.2.01035 The following relevant logs can be found in /var/log/system.log: Jan 18 14:12:52 user acvpnui2630: Function: do. AnyConnect macOS 10.13 (High Sierra) Compatibility Impact on Posture When a Power Event or Network Interruption Occurs Network Access Manager Does Not Automatically Fallback to WWAN/3G/4G Web Deploy of NAM, DART, ISE Posture, and/or Posture Fails with Signature/File Integrity Verification Error.
This will open the Security & Privacy window. At the bottom, you will see the 'System software from developer 'Cisco' was blocked from loading message. Click on 'Allow.'
After you click Allow, this will permit the extension, and the software will continue to install.