Note: This tutorial is old and was posted for Windows Vista. It is now updated with Windows 7 as well.
When you try to open a software using Control Panel-> programs and features in Windows Vista or 7to delete, you see a dialog box in Windows to confirm your choice, as shown in the following screenshot:

The dialog box also contains a checkbox that allows you to save your choice for the future and if you select the check box, and then click Yes or no button, Windows will remember your choice and will never show the confirmation dialog box prompt delete.
Once you do this, you'll have left no way to recover from the confirmation window.
Today in this tutorial you will learn a simple way to recover from the message window, if you accidentally the checkbox "In the future don't give me this dialog" selected while clicking Yes or no.
So without wasting time, let's begin the tutorial:
1. Type regedit in RUN or Start menu search box and press Enter. It will open the Registry Editor.
2. now navigate to following key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\DontShowMeThisDialogAgain
3. In the right pane, look for the following String value:
{948e51fb-0a48-44f0-86ac-33c36def540c}
It would be Noset. It removes or modifies the Yesvalue.

4. that's it. You now get the box delete confirmation prompt back.
PS: If you have a ready-made registry script to do the task automatically, download following ZIP file, extract and run the extracted REG-file. It will ask for confirmation, accept:
Download registry script
If you select this, you might also be interesting for other similar articles in the following section: troubleshooting, Windows 7, Windows Vista.
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