Hello, I have problem with 802.1x wired authentication on windows 7 computers. First time switch authenticates users successfully, with computer credentials or users credential, but after couple of minutes switch trues too authenticates users again, and after that client don't respond to authentication. Eventually client NIC is changing status to "Authentication Failed". If i unplug and plug cable again, at first time authentication completes successfully but after couple of minutes NIC is changing status to "Authentication Failed". I have read that Windows 7 doesnt support user re authentication ? How can I fix this problem ? Authentication method is PEAP, and mode is "User or computer authentication"