Question about SonicWALL SSL-VPN NetExtender Adapter
In Windows your security settings need to be set to accommodating this installation you can find the security settings for IE8 by going to tools then internet options set your security to low from your question it reads that you have done this already my research bring me to this option please read below.
Article Applies To:
SonicWALL SMB SSL-VPN Appliances and Software: SMB SSL-VPN 2000, SMB SSL-VPN 4000, NetExtender
Firmware/Software Version: 2.5 or higher
When installing NetExtender on any supported Windows operating system, the error "Failed to install NetExtender, the installation has been rolled back" may be observed, especially when the operating system is installed on a drive other than the default. This issue is resolved by upgrading the SSL VPN 2000 or 4000 appliance to firmware version 2.5 or higher and making another installation attempt.
Resolution or Workaround:
For each of the following possible causes of this behavior, an explanation, workaround, or solution is provided:
Posted on Mar 12, 2011
Tips for a great answer:
•Combination of Cisco Unified Video Advantage 2.1.2 and McAfee HIPS Patch 4 Build 688. To avoid system failures, uninstall either of these two applications, upgrade McAfee to the latest version, or use VPN Client 4.6.x.
•64-bit Windows operating systems. For x-64 support, customers should explore with their Cisco sales representative the use of the next-generation Cisco AnyConnect VPN Client.
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