How To Disable WGA For Good
 

The easiest way to disable WGA is to deny access to its files. Why? Because if access is denied for all users that can use this file, the file cannot be executed. The normal way to deny access is to use Windows Explorer to open the C:\Windows\System32 folder and find three files that WGA uses – WGATray.exe, WGALogon.dll and LegitCheckControl.dll. Right-click on each file, go to Properties->Security, click on each listed user, click on Deny All and Apply. But, since there is no Security tab, this can’t be done so easily. Until now, of course.

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