Employee accounts will lock after 6 unsuccessful password attempts. If the account gets locked after 1 attempt on the user's end, and there has been a recent password change, check to see if there is a mobile device that may still have the old password and is attempting to connect to the Wi-Fi. If so, remove/forget the network from the mobile device then re-add and sign in with the new password.
Accounts can be unlocked at the Account Management Portal or by calling the Service Desk at 704-330-5000.