Wireless is set up as user or computer authentication, so the computer has network access during its start up and and can receive computer-assigned group policies. It is supposed to then switch to user authentication when the user logs in. This mostly works excepts sometimes, when logging in with a local account, the wireless doesn't authenticate (as expected) initially and pops up an error saying unable to connect to wireless, but after the desktop loads, the wifi authenticates and it connects anyway. Why would this happen? Could it be because the local account has the same user name and password as a domain account and it can't tell the difference or is it authenticating as computer when it should only authenticate as a user at this point?

Hi, Based on my research, the description for User or computer authentication mode is Use computer-only credentials or user-only credentials. When a user is logged on, the user's credentials are used for authentication. When no user is logged on, computer-only credentials are used for authentication. Therefore, Im afraid that this issue may be caused by the failure of Computer credentials authentication. In order to verify this, please try the following: 1. Please change the authentication mode to Computer authentication and check if you can connect to your network. 2. Please change the authentication mode to User authentication and check if you can connect to your network. If Computer authentication is failed but User authentication is successful, the issue can be caused by the incorrect configuration in the related servers. Therefore, please contact your administrator for help or please post the thread in Windows Server Forums. Hope this helps. Jeremy Wu TechNet Community Support

It appears that user authentication will work after you log in if the local user account has the same user name and password as a domain account. I just noticed it only works when logged in with the local user account that has the same user name and password as an allowed domain account. It errors while you are logging on to the desktop with failed wifi authentication, but you can just cancel and log in anyway. Seems like the wifi authentication does not know the difference between local user accounts and domain accounts once you are already logged on.

Hi, Firstly, please check if the issue also occurs in other computers. If not, please refer to Configure Wireless Clients running Windows 7 and Windows Vista for PEAP-MS-CHAP v2 Authentication and double check your configuration. Also, you can compare the configuration with other computers and correct it. Hope this helps. Jeremy Wu TechNet Community Support

Hi, Firstly, please check if the issue also occurs in other computers. If not, please refer to Configure Wireless Clients running Windows 7 and Windows Vista for PEAP-MS-CHAP v2 Authentication and double check your configuration. Also, you can compare the configuration with other computers and correct it. Hope this helps. Jeremy Wu TechNet Community Support