Mountain Lion won't connect to WPA-Enterprise

Configuration: Macbook Pro (8,2) running OS X 10.8.3.
My office's "IT Guy" changed our Wifi network recently, with the surprise side effect that the Mac users are now offline, including me. The odd thing is that my iPhone connects very nicely, as does my Windows (Bootcamp). When I'm booted into Windows and connected, here is the information I can glean from the network manager:
Security Type: WPA-Enterprise
Encryption Type: TKIP
NW Authentication Method: PEIP
He suggested I buy a little USB stick that would connect me, but that is over my "lame-ness" limit. The fact that the iPhone can connect but the Macbook can't is a little worrisome. Do I have any hope, assuming that firing the IT Guy and buying the USB stick are both off limits?

I had a similar situation happen to me today. Connecting to an Enterprise WPA2 network, and it authenticated correctly via PEAP (MSCHAPv2) but still would not show a good Connected status.
What seemed to work was to go into Network preferences, click the Advanced button, Select TCP/IP tab, and click Renew DHCP Lease.
Not sure why the MacBook did not connect, while the iPhone did, but this seemed to give the connection a good Connected status and the exclamation point on the WiFi network went away.
And it's been 15 minute and the user has not come back to bug me again!

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so far. Take a look at this. It may go a long way to help folk understand why it's broken.
I wholeheartedly atribute this to a chap on trick77.com but I can confirm that my set up...
HP Proliant 4 x 1 TB drives runing Ubuntu 8.04.2 with 4 shares for my Mac stuff under 'afp' and 1 share under 'smb' ,so my wifes Windows work laptop can be backed up. Since update to Lion on main Mini no Time Machine.
I tried adding the line......uams_dhx_2_passwd.so......in Webmin but it did't work. I am sure a fix will be out soon so for time being I just back up important stuff either to good old cheap DVD discs and a USB drive.
==
AFP network connections to many Linux-based NAS units aren’t working in Mac OS X Lion 10.7 developer preview. After hitting the connect button a message pops up saying:
The version of the server you are trying to connect to is not supported. Please contact your system administrator to resolve the problem.
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I checked my QNAP NAS for available afpd/netatalk UAMs and DHX2 isn’t present, so it most likely wouldn’t work with Lion.
Well, if it weren’t for Time Machine, I could always resort to SMB.
[/usr/local/etc/netatalk/uams] # ls -ladrwxr-xr-x
1024 Jan 31 23:08 ./drwxr-xr-x
1024 Feb 25 20:14 ../lrwxrwxrwx
14 Feb 25 2011 uams_clrtxt.so -> uams_passwd.so*lrwxrwxrwx
18 Feb 25 2011 uams_dhx.so -> uams_dhx_passwd.so*-rwxr-xr-x
10959 Jan 31 23:08 uams_dhx_passwd.so*-rwxr-xr-x
5304 Jan 31 23:08 uams_guest.so*-rwxr-xr-x
6996 Jan 31 23:08 uams_passwd.so*
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Update 2-26-2011: It has been verified that Lion is able to connect to a Linux host running netatalk 2.1.2 supporting the DHX2 UAM in afpd.
Update 7-15-2011: See Time Machine support in OS X Lion 10.7.
==
Now we also have to wait for 'Netatalk' stable release to be outed as that should resolve the Ubuntu via Webmin picture..(we hope).
I tried different work arounds and have reset them all back to what they were and will just have to wait for Apple to address this. Hope this snippet
gives a little clarity
Cheers,
Michael

Hi Slammer,
I don't have a Qnap. The info between both == signs is to give an understanding of what’s going on.
Myself I have a HP Proliant 4 x 1 TB drives running Ubuntu 8.04.2 with 4shares for my Mac stuff under 'afp' and 1 share under 'smb', so my wife’s Windows work laptop can be backed up.
Now I have got all my connectivity back by using the terminal commands whichis now well documented but here is a good place if doing it on Lion as shown byMember 'ctendell'...
http://charlestendell.com/os-x-lion-afp-nas-connection-error-fix/
I can now see my server and everything on it but still no Time Machine backups because you need Netatalk 2.2 to be loaded on the server in my case and millions of others into Ubuntu.
(The version I am sporting at present is Netatalk 2.03). This I can do by using Webmin and will do it after the update to Lion due shortly. I could do it now, but I won't.
I should never have updated to Lion, and do what I have always done, and that was wait until at least 3-4 updates have taken place and review all the discussions on this forum to see if issues have been resolved.
With regards to DH....Things may have been fixed in the next update which has been seeded and a selectable choice option to use the prior DH....over the new version may be on the cards. The Netatalk latest version is still in beta format though it can be used and has been implemented by NAS manufacturers, but as I understand its due to become 'stable' and no longer in 'beta mode'.
I dare say that S.Jobs will not want to alienate a huge group so a fix will be the right thing to do but given the mountain of cash they have and most of the revenue coming from iPhones, iPads etc, they may decide not to and of course that means 3rd party fixes.
Patience is a virtue but Apple sometimes sorely tests it.
Cheers
Message was edited by: Michael Wayne for spelling corrections

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..Step by Step to fix your Mac
Install/upgrade RAM or storage drive in Mac's

Mountain Lion won't connect to WPA-Enterprise

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