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Understand out there have group of peoples still using the pirated Windows XP for their personal and home use. Some of it accidently updated their Windows and got the “This Windows is Not Genuine” warning and the computer become slow.

Here is some method you can disable or remove this warning message.

First Method

1. Launch Windows Task Manager.
2. End wgatray.exe process in Task Manager.
3. Restart Windows XP in Safe Mode.
4. Delete WgaTray.exe from c:\Windows\System32.
5. Delete WgaTray.exe from c:\Windows\System32\dllcache.
6. Launch RegEdit.
7. Browse to the following location:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
   Windows NT\CurrentVersion\Winlogon\Notify
8. Delete the folder ‘WgaLogon’ and all its contents
9. Reboot Windows XP.

Note: With this method, you may be prompted to install WGA Notifications again which can still be unselected.

Second Method

Another alternative is by using System Restore to restore the PC to a previous restore point that WGA Notifications hasn’t kicked in, and then carefully stop KB905474 from been applied to the system. To use System Restore, go to Start -> All Programs -> Accessories -> System Tools -> System Restore.

Note: Again, you may be prompted again to install WGA Notification, so it must be bypassed.

Third Method

This method involves using a cracked version of LegitCheckControl.dll to replace the original copy of LegitCheckControl.dll, and thus bypass the WGA validation and make Microsoft believes that your copy of Windows is genuine. To get rid of WGA Notifications warning messages, the patched version of WgaLogon.dll and WgaTray.exe to replace the existing files.

To apply the patch by replacing the files manually, try to end the respective processes in the Task Manager before deleting the existing files. Most likely is you will have to restart your PC in Safe Mode in order to replacing the original copy of LegitCheckControl.dll and related files. However, there has been automatic updater and even cracked WGA installer that automatically apply the patched version of WGA files.

Official Microsoft Method

Disable WGA Notifications

1. Log on to the computer by using an account that has administrative permissions.
2. Make sure that the WGA Notifications version that exists on the computer is a pilot version listed above. The version format for the pilot version is 1.5.0532.x. In this case, you can uninstall versions 527-532 only (Note: the steps should disable other version of WGA Notifications too). To find the WGA Notifications version, follow these steps:
   1. Click Start, and then click Control Panel.
   2. Double-click Add or uninstall Programs, locate and then click Windows Genuine Advantage Notifications, and then click Click here for support information.
   3. In the Support Info dialog box, verify the version number, and then click Close.
3. Rename the following files by changing the extension to .old:Rename %Windir%\system32\WgaLogon.dll to %Windir%\system32\WgaLogon.old
   Rename %Windir%\system32\WgaTray.exe to %Windir%\system32\WgaTray.old
4. Restart the computer.

Uninstall WGA Notifications Manually

1. Log on to the computer by using an account that has administrative permissions.
2. Make sure that the WGA Notifications version that exists on the computer is a pilot version that range from 1.5.0527.0 to 1.5.0532.2 (Note: other versions should works too). To find the WGA Notifications version, follow these steps:
   1. Click Start, and then click Control Panel.
   2. Double-click Add or uninstall Programs, locate and then click Windows Genuine Advantage Notifications, and then click Click here for support information.
   3. In the Support Info dialog box, verify the version number, and then click Close.
3. Rename the following files by changing the extension to .old:Rename %Windir%\system32\WgaLogon.dll to %Windir%\system32\WgaLogon.old
   Rename %Windir%\system32\WgaTray.exe to %Windir%\system32\WgaTray.old
4. Restart the computer.
5. Unregister LegitCheckControl.dll by using Regsvr32 with these steps:
   1. Click Start, click Run, type cmd, and then click OK.
   2. At the command prompt, type the following, and then press ENTER:Regsvr32 %Windir%\system32\LegitCheckControl.dll /u
6. Restart the computer.
7. Click Start, click Run, type cmd, and then click OK.
8. At the command prompt, delete the following files by typing the Del command and follow by pressing ENTER after you type each command.Del %Windir%\system32\wgalogon.dll
   Del %Windir%\system32\WgaTray.exe
   Del %Windir%\system32\LegitCheckControl.dll
9. At the command prompt, type regedit.
10. Locate and then right-click the following registry subkeys. Click Delete after you locate each subkey.
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\ CurrentVersion\Winlogon\Notify\WgaLogon
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\ CurrentVersion\Winlogon\Notify\WgaLogon
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows \CurrentVersion\removeremove\WgaNotify
11. Restart the computer.