Hi Walter, I had a similar problem and spent over a month trying to determine what is causing the issue with Cisco. I went through multiple OS re-installs, but it seemed that when MS updates were installed, Cisco AnyConnect Client would stop working.

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Troubleshooting Always On VPN Error 691 and 812 – Part 2

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Download the PNE software and install it before installing the VPN client. Go to Cisco DNE Support page , and at mid-way through the page under “ Other DNE Problems ” you will find the download link to 32-bit and 64-bit version of DNE installation file.

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