I've installed a software on my windows 8 computer which writes entries in my registry. How can I modify this registry entries for all users ? For example what I need to modify is values from this key but this key only refers to a single user: [HKEY_USERS\S-1-5-21-543895283-3741240661-2983116896-500\Software\IvoSoft\ClassicStartMenu\Settings] But "S-1-5-21-543895283-3741240661-2983116896-500" is different depending on the user name. How can I change that key for all users ? I've tried to work with this key but is not possible. [HKEY_USERS\S-1-5-21-*\Software\IvoSoft\ClassicStartMenu\Settings]