Usually, the registry editor can only be opened in one instance. If you try to start it a second time, only the currently opened program window is focused. You would prefer two editors to be open simultaneously, for instance, to compare key values in a more effective way.
Check out our section for Registry Edits and hacks
Make use of the Start menu as usual and click ‘Run…’ to open a second registry editor parallel to an instance that is already open. In this dialog, enter the ‘regedit.exe’ command in the ‘Open’ ﬁeld. But this time add the ‘-m’ parameter to it with a space.
Note: Changes that are made in one editor are not automatically detected by other open editors. Thus, you need to click [F5] to refresh the display. With every opened registry editor instance, you directly access the same database.