To Enable Admin $ share using Registry and put in login script in AD

Sometime when you push 2012 client to computer and found that some of the PC the Admin$ share is not enable so you are unable to push the client agent to computers.
So you might need to use the Registry key to enable the admin$ share in order to proceed with the Client agent installation.
Below are the Registry key to enable to the Admin$ Share for Windows XP, Vista and Windows 7

Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanServer\Parameters] "AutoShareWks"=dword:00000001

To Enable the admin$ share for Windows XP and Vista .Copy and paste to notepad and save it to xp.reg file.
 

Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] "LocalAccountTokenFilterPolicy"=dword:00000001

To Enable the admin$ share for Windows 7,Copy and paste to notepad and save it to win7.reg file.
 
you can set it in Group policy so that all the computer will enable the admin$ share.