I have this case and I would be very thankful if someone has the answer for !
When Wired AutoConfig service is enabled on a Windows XP (or 7) station that is connected to an IP phone, the "Additional Information is needed to connect to this network" popup bullet successfully appears when the UTP cable is unplugged and then plugged back in the network card or the network adapter is disabled and re-enabled or the switchport configured with Dot1x had a shut no shut.
However, the "Additional Information is needed to connect to this network" does not appear when the Windows workstation reboots and it gets unauthenticated!
Our customer finds it a hard task to instruct his "non IT employees" to unplug the UTP cable and then plug it back or do any of the above methods in order for the authentication bullet to appear.
Does anyone know how to configure the Windows machine so that the authentication popup bullet automatically appears upon machine startup?
Can you post a copy of your 802.1x configs from the switch? Also, what type of authentication are you using (PEAP, EAP-TLS, etc) ?
I am using PEAP and below is the dot1x config under the switchport:
switchport access vlan 107
switchport mode access
switchport voice vlan 156
authentication event server dead action authorize vlan 107
authentication host-mode multi-domain
authentication order dot1x mab
authentication priority mab
authentication port-control auto
dot1x pae authenticator
dot1x timeout quiet-period 180
Please note that the authentication bullet appears on a Windows PC directly connected to the switch.
The problem is when the PC is connected to an IP phone or takes too long to boot.
Can you add the following commands to your switchport and see if that fixes your problem:
authentication event fail action next-method
authentication priority dot1x mab