Now go through the list and delete all the values except the Default key to clear the Run dialog history on your PC. On the resulting key, you will find a list of DWORD values named a, b, c, d, and so on. When the UAC prompt appears on the screen, click on the Yes button to open the Registry Editor on your computer.Īfter opening the Registry Editor, navigate to the following path: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\RunMRU To do this, you can search for “regedit” in the Taskbar search box and click on the Registry Editor in the search result. To get it started, you need to open Registry Editor on your computer first. If you want to learn more about these steps in detail, continue reading: This way you can delete all the commands you want to remove from the Run dialog history.Click the Yes button to confirm the value delete.Right-click on the registry value and select the Delete option.Navigate to the path – \Explorer\RunMRU.If a UAC popup appears on the screen, click on the Yes button to give your approval.Select the Registry Editor from the search result.Search for regedit in the Windows search box.