Bizarre behavior - noticed today an exclamation mark on the LAN icon in the start menu on 2 devices, a Windows XP machine, and a Windows Server 2003 machine. When going into the Local Area Connection Status, it shows the Status as: Authentication failed. These are the only 2 machines i noticed this on today, they still have full network connectivity, and everything seems to be working as normal. They both have Static IP addresses set at the computer/server. Nothing has changed software wise, no driver updates, no installs, etc. It doesn't seem to be happening on any other staticly set computers or servers. No I did not try a restart yet since the server is actually our exchange server. Again no connection issues.
The only thing recently changed was our switch where these 2 devices connect. I was reading something about 802.1x, but it doesn't seem to affecting any other devices connected to this switch, so dont know if this is on the switch end. Any ideas?