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Ask the Expert- SD-WAN

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NAC - Issues with locking machines - When unlocking it says NAC server unavailable

We have an issue with NAC version 4.8 and the new client version installed on Windows XP.  The user locks the computer, then comes in the next day and when the computer is unlocked the NAC client states that the NAC server is unavailable.  The only fix is to exit the agent and restart it or reboot the computer.

Anyone run into this problem or have a solution for it?

Thanks

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Beginner

Re: NAC - Issues with locking machines - When unlocking it says

I found this on another post, this may be the problem, we are trying the fix now to see if it works:

"That issue is caused by Microsoft's Internet Explorer browser going into  Work Offline Mode.  It's kind of a bug w/ the pre 4.8 releases of NAC,  though not publicly communicated.  The NAC agent is using an IE API to  perform it's SSL work and if IE is open and trying to refresh during the  login process, then IE goes into offline mode automtically.  The  workaround is to have the user disable offline mode in IE, and close out  teh NAC error message.  It typically fixes it within a few seconds and  NAC authenticates normally."

We are running the 4.8 client, so it looks like the client bug has not been fixed yet.