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How to Remove Shut Down Button from Windows Vista and 7 Login Screens?

Here we start the tutorial:

1. We’ll need to edit “%windir%\System32\authui.dll” file. First copy authui.dll file from “System32” folder to some other location for example Desktop.

Note: here %windir% represents “Windows” directory which can be found in the system drive where Windows is installed. In most of the cases its C:\Windows.

2. Now open the new file in Resource Hacker.

3. Now press “Ctrl+F” keys or select “Find Text” option from “View” menu.

4. Type Shutdown in Find what text box. Click on “Find Next” button and it’ll go to following lines:

<element id=”atom(ShutDownFrame)” layout=”flowlayout()”>
<button id=”atom(ShutDown)” accname=”resstr(12128)” tooltip=”true”/>
<button id=”atom(ShutDownOptions)” accname=”resstr(12131)” accdesc=”resstr(12131)” tooltip=”true” shortcut=”115″/>

5. Replace the last 2 lines of code with following:

<element id=”atom(ShutDownFrame)” layout=”flowlayout()”>
<button id=”atom(ShutDown)” accname=”resstr(12128)” tooltip=”true” layoutpos=”none”/>
<button id=”atom(ShutDownOptions)” accname=”resstr(12131)” accdesc=”resstr(12131)” tooltip=”true” shortcut=”115″ layoutpos=”none”/>

Guess what? We are only adding an extra string layoutpos=”none” at the end of each line.

6. That’s it, click on “Compile Script” button and save the file.

7. Now we’ll need to replace original authui.dll file present in “C:\Windows\System32\” folder with our new authui.dll file which we saved at Desktop or some other location.

7 a. First take ownership of “C:\Windows\System32\authui.dll” file using following tutorial:

Add Take Ownership Option in File / Folder Context Menu in Windows Vista and 7

7 b. Now rename it to “authui_backup.dll” or any other name.

7 c. Now copy your new modified “authui.dll” file from Desktop to “System32” folder.

PS: If you are using 64-bit Windows edition, you’ll also need to replace authui.dll file present in “C:\Windows\sysWOW64\” folder.

8. Restart your system and after restart Windows will start using your new modified file and you’ll not see the “Shutdown” button on login screen.

PS: Windows Vista “authui.dll” file contains only a single instance of (ShutDown) string, so you’ll need to replace it only once using Step 3 and 4 but Windows 7 contains 3 instances of this string, so you’ll need to change all the 3 instances in the file.

 

Official Source: http://www.askvg.com/how-to-remove-shutdown-button-from-windows-vista-and-7-login-screens/

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