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Cisco - 802.1x authentication fails at Windows XP - Domain not available

Marco Marco is offline
Junior Member
Join Date: Jul 2009
Posts: 1
I have XP SP3 installed on a pc, configured to use 802.1x
authentication (PEAP -MSCHAPv2), using a Cisco 2960G switch and a Cisco ACS v4.2 Radius Server.

When I boot up the pc and try log in, 802.1x authentication fails. I get an error message ' System can not log you on because the Domain is not available'.

If i log in as an Administrator and do a manual login, im able to Authenticate onto the network, so i know i that i have configured the switch and the ACS server correctly (fingers crossed)

I have also tried a pc with Windows XP sp2 and im able to log in fine, so as suggests it could lead down to a SP3 issue or a service or global policy of some kind.

Has anyone come across this problem and know of a fix?
any help or suggestions will be most grateful

Thanks Marco
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