Hi, I got a very strange problem and I don't know where to look else. Maybe one of you have an idea what could be wrong. I've setup (with a lot of the lists help) a Freeradius server, based on certificated, doing a machine authentification over our linksys switch as AP. The clients are using EAP-TLS and for the most clients it works. But there are two W2K clients which doesn't want to register over radius, the radius server even doesn't get a request. I took a freshinstall W2K with SP4, put on all updated, put on IE6 and the necessary certs and registry patch, started the wireless service, configured network settings, rebooted. If I connect the networkcable to secured ethernet port I get in Windows "Couldn't logon to the network" (in german). I have 2 other W2K machine working without a problem (even on the same Switch port). I had a Realtek NIC in that PC, put on new drivers, no effect. Put in an older 3com NIC, no effect. It's like the AP doesn't forward the request to the Freeradius server. With other W2K no problem, with XP no problem with this AP. Something I could do, beside throw the pc out of the window? TIA Alex -- ServiceCenter IT - Alexandros Gougousoudis (Leiter) Gemeinsame Einrichtung der Kunsthochschule Berlin-Weissensee, Hochschule für Musik "Hanns Eisler" und der Hochschule für Schauspielkunst "Ernst Busch". Tel.: 030 / 477 05 - 444 * Fax.: 030 / 477 05 - 445