I'm having an intermittant problem (those are the best kind!) with a Dell Latitude E5400 laptop connecting to a Cisco LEAP wifi network. The Dell is a one-off (I usually don't use Dell laptops) with Intel 5100 AGN radio. The laptop is a member of MYDOMAIN and I need it to connect at a customer's site of THEIRDOMAIN. The end user has a valid user name and password to access THEIRDOMAIN. I have Dell's latest drivers, along with Intel's LEAP download installed.
I have several other non-Dell Windows 7 laptops that connect without a problem at THEIRDOMAIN's wifi network, connecting to THEIRDOMAIN's Exchange server, ability to browse the net, use network printers, etc.
The Dell initially connected, allowing me to set up network printer, Outlook access, etc. I was able to shutdown, boot and connect to the network several times over the past couple of days.
Today, it connected A-OK. I copied the user's data files to the Dell and rebooted, just to make certain he could login. It now refuses to connect to the LEAP wifi, giving me a Limited Access message.
I have removed and re-created the wifi connection several times without success. Settings are identical to the other non-Dell laptops. SSID is correct, "connect automatically..." is checked, "connect even if the network is not broadcasting..." is checked, security type is 802.1X, encryption type is WEP, network auth method is Cisco LEAP with the user's THEIRDOMAIN user name and password under Settings, Advanced Settings has "specify authentication mode" is checked and set to "user or coomputer authentication."
I have no control over the THEIRDOMAIN and have no access to change anything on their network.
I have wasted far too much time on this already, so some insight would be appreciated.