Odd Problem With MDT 2012 Deployment

Question

Disclaimer:  I'm an MDT n00b and barely know how to do anything other than the basics.
The odd problem:  Computers that I deploy Windows 7 to using MDT will NOT (after deployement is complete) pass credentials to our proxy (Smoothwall - NTLM Authentication) and cannot not access the internet.  It doesn't matter the flavor of Windows
7: 32bit/64bit or Pro/Ultimate same result.  Does this on an unpatched machine with only IE8 or a fully patched machine with IE9.  I've diddled all the security and connection settings in IE that I know to diddle with the same result. And it's not
just an IE problem.  It does it with Firefox, too.  Now getting to intranet sites is no problem... this is strictly an internet proxy authentication issue.
Now... why am I asking the MDT forum about this?  Because I can load Windows 7 the old fashioned way with a DVD made from the same ISO that I used when setting up MDT and it works fine. 
So  MDT must be doing something differently when deploying Win 7.  As a side note, when I deploy Windows 8 using MDT we do not have this issue. Maybe Microsoft just wants me to upgrade? :)
Everything else about the computer seems quite normal.  No undetected drivers.  Windows activates normally.  I can join the domain either during or after the process.  Install applications automatically.  I mean the whole MDT process
seems to be working great otherwise. 
Help?  Please?

Answer 1

Yes, I found a way to undo this in my environment without needing to reimage all of the computers. 
There are two problems:
1. GP items in the Administrative Template were modified.
2. GP items in the Security section were modified.
Problem 1
To address problem #1 delete the folder "%SystemRoot%\System32\GroupPolicy":
rd /s /q "%SystemRoot%\System32\GroupPolicy"
Problem 2
To address problem #2, it gets a little more complicated since there is no easy way to "revert" to the default in Win7.  The only workaround is to import new settings.  To accomplish this, I ran the following from a FRESHLY installed non-domain
joined computer that did not have the local GPO pack applied:
secedit /export /cfg secConf.inf
Then on the "bad" system that had the local GPO applied, I ran:
secedit /configure /db secedit.sdb /cfg secConf.inf /overwrite /quiet
I also found that I needed to delete the following keys since they did not exist on my safe/good image:
reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v "DisableCAD" /f
reg delete "HKLM\System\CurrentControlSet\Control\Lsa" /v "LmCompatibilityLevel" /f
reg delete "HKLM\System\CurrentControlSet\Control\Lsa" /v "SCENoApplyLegacyAuditPolicy" /f
And for some reason (and this was not consistent), I also found that I needed to delete the following on some systems:
reg delete "HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" /f
Full Solution
Here is everything I ran against my "bad" systems that were domain joined in production use:
Batch File
rd /s /q "%SystemRoot%\System32\GroupPolicy"
secedit /configure /db secedit.sdb /cfg "%~dp0SecurityPolicies-Defaults.inf" /overwrite /quiet
reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v "DisableCAD" /f
reg delete "HKLM\System\CurrentControlSet\Control\Lsa" /v "LmCompatibilityLevel" /f
reg delete "HKLM\System\CurrentControlSet\Control\Lsa" /v "SCENoApplyLegacyAuditPolicy" /f
reg delete "HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" /f
SecurityPolicies-Defaults.inf
[Unicode]
Unicode=yes
[System Access]
MinimumPasswordAge = 0
MaximumPasswordAge = 42
MinimumPasswordLength = 0
PasswordComplexity = 0
PasswordHistorySize = 0
LockoutBadCount = 0
RequireLogonToChangePassword = 0
ForceLogoffWhenHourExpire = 0
NewAdministratorName = "Administrator"
NewGuestName = "Guest"
ClearTextPassword = 0
LSAAnonymousNameLookup = 0
EnableAdminAccount = 1
EnableGuestAccount = 0
[Event Audit]
AuditSystemEvents = 0
AuditLogonEvents = 0
AuditObjectAccess = 0
AuditPrivilegeUse = 0
AuditPolicyChange = 0
AuditAccountManage = 0
AuditProcessTracking = 0
AuditDSAccess = 0
AuditAccountLogon = 0
[Registry Values]
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Setup\RecoveryConsole\SecurityLevel=4,0
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Setup\RecoveryConsole\SetCommand=4,0
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\CachedLogonsCount=1,"10"
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ForceUnlockLogon=4,0
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\PasswordExpiryWarning=4,5
MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\ScRemoveOption=1,"0"
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin=4,5
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser=4,3
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\DontDisplayLastUserName=4,0
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableInstallerDetection=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableSecureUIAPaths=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle=4,0
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken=4,0
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\LegalNoticeCaption=1,""
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\LegalNoticeText=7,
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\ScForceOption=4,0
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\ShutdownWithoutLogon=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\UndockWithoutLogon=4,1
MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\ValidateAdminCodeSignatures=4,0
MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers\AuthenticodeEnabled=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\AuditBaseObjects=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\CrashOnAuditFail=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\DisableDomainCreds=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\EveryoneIncludesAnonymous=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy\Enabled=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\ForceGuest=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\FullPrivilegeAuditing=3,0
MACHINE\System\CurrentControlSet\Control\Lsa\LimitBlankPasswordUse=4,1
MACHINE\System\CurrentControlSet\Control\Lsa\MSV1_0\NTLMMinClientSec=4,536870912
MACHINE\System\CurrentControlSet\Control\Lsa\MSV1_0\NTLMMinServerSec=4,536870912
MACHINE\System\CurrentControlSet\Control\Lsa\NoLMHash=4,1
MACHINE\System\CurrentControlSet\Control\Lsa\RestrictAnonymous=4,0
MACHINE\System\CurrentControlSet\Control\Lsa\RestrictAnonymousSAM=4,1
MACHINE\System\CurrentControlSet\Control\Print\Providers\LanMan Print Services\Servers\AddPrinterDrivers=4,0
MACHINE\System\CurrentControlSet\Control\SecurePipeServers\Winreg\AllowedExactPaths\Machine=7,System\CurrentControlSet\Control\ProductOptions,System\CurrentControlSet\Control\Server Applications,Software\Microsoft\Windows NT\CurrentVersion
MACHINE\System\CurrentControlSet\Control\SecurePipeServers\Winreg\AllowedPaths\Machine=7,System\CurrentControlSet\Control\Print\Printers,System\CurrentControlSet\Services\Eventlog,Software\Microsoft\OLAP Server,Software\Microsoft\Windows NT\CurrentVersion\Print,Software\Microsoft\Windows NT\CurrentVersion\Windows,System\CurrentControlSet\Control\ContentIndex,System\CurrentControlSet\Control\Terminal Server,System\CurrentControlSet\Control\Terminal Server\UserConfig,System\CurrentControlSet\Control\Terminal Server\DefaultUserConfiguration,Software\Microsoft\Windows NT\CurrentVersion\Perflib,System\CurrentControlSet\Services\SysmonLog
MACHINE\System\CurrentControlSet\Control\Session Manager\Kernel\ObCaseInsensitive=4,1
MACHINE\System\CurrentControlSet\Control\Session Manager\Memory Management\ClearPageFileAtShutdown=4,0
MACHINE\System\CurrentControlSet\Control\Session Manager\ProtectionMode=4,1
MACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems\optional=7,Posix
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\AutoDisconnect=4,15
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\EnableForcedLogOff=4,1
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\EnableSecuritySignature=4,0
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\NullSessionPipes=7,
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\RequireSecuritySignature=4,0
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\RestrictNullSessAccess=4,1
MACHINE\System\CurrentControlSet\Services\LanmanWorkstation\Parameters\EnablePlainTextPassword=4,0
MACHINE\System\CurrentControlSet\Services\LanmanWorkstation\Parameters\EnableSecuritySignature=4,1
MACHINE\System\CurrentControlSet\Services\LanmanWorkstation\Parameters\RequireSecuritySignature=4,0
MACHINE\System\CurrentControlSet\Services\LDAP\LDAPClientIntegrity=4,1
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\DisablePasswordChange=4,0
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\MaximumPasswordAge=4,30
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\RequireSignOrSeal=4,1
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\RequireStrongKey=4,1
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\SealSecureChannel=4,1
MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters\SignSecureChannel=4,1
[Privilege Rights]
SeNetworkLogonRight = *S-1-1-0,*S-1-5-32-544,*S-1-5-32-545,*S-1-5-32-551
SeBackupPrivilege = *S-1-5-32-544,*S-1-5-32-551
SeChangeNotifyPrivilege = *S-1-1-0,*S-1-5-19,*S-1-5-20,*S-1-5-32-544,*S-1-5-32-545,*S-1-5-32-551
SeSystemtimePrivilege = *S-1-5-19,*S-1-5-32-544
SeCreatePagefilePrivilege = *S-1-5-32-544
SeDebugPrivilege = *S-1-5-32-544
SeRemoteShutdownPrivilege = *S-1-5-32-544
SeAuditPrivilege = *S-1-5-19,*S-1-5-20
SeIncreaseQuotaPrivilege = *S-1-5-19,*S-1-5-20,*S-1-5-32-544
SeIncreaseBasePriorityPrivilege = *S-1-5-32-544
SeLoadDriverPrivilege = *S-1-5-32-544
SeBatchLogonRight = *S-1-5-32-544,*S-1-5-32-551,*S-1-5-32-559
SeServiceLogonRight = *S-1-5-80-0
SeInteractiveLogonRight = Guest,*S-1-5-32-544,*S-1-5-32-545,*S-1-5-32-551
SeSecurityPrivilege = *S-1-5-32-544
SeSystemEnvironmentPrivilege = *S-1-5-32-544
SeProfileSingleProcessPrivilege = *S-1-5-32-544
SeSystemProfilePrivilege = *S-1-5-32-544,*S-1-5-80-3139157870-2983391045-3678747466-658725712-1809340420
SeAssignPrimaryTokenPrivilege = *S-1-5-19,*S-1-5-20
SeRestorePrivilege = *S-1-5-32-544,*S-1-5-32-551
SeShutdownPrivilege = *S-1-5-32-544,*S-1-5-32-545,*S-1-5-32-551
SeTakeOwnershipPrivilege = *S-1-5-32-544
SeDenyNetworkLogonRight = Guest
SeDenyBatchLogonRight =
SeDenyInteractiveLogonRight = Guest
SeUndockPrivilege = *S-1-5-32-544,*S-1-5-32-545
SeManageVolumePrivilege = *S-1-5-32-544
SeRemoteInteractiveLogonRight = *S-1-5-32-544,*S-1-5-32-555
SeImpersonatePrivilege = *S-1-5-19,*S-1-5-20,*S-1-5-32-544,*S-1-5-6
SeCreateGlobalPrivilege = *S-1-5-19,*S-1-5-20,*S-1-5-32-544,*S-1-5-6
SeIncreaseWorkingSetPrivilege = *S-1-5-32-545
SeTimeZonePrivilege = *S-1-5-19,*S-1-5-32-544,*S-1-5-32-545
SeCreateSymbolicLinkPrivilege = *S-1-5-32-544
[Version]
signature="$CHICAGO$"
Revision=1
Thanks to Darren Mar-Elia for leading me in the right direction with this.
Good luck!