It is definitely not necessary to edit the registry
When running Window 11, you can get the Windows 10 ribbon by simply unchecking a box in the "View" menu of "Folder Options". Here's what you do:
- Open Windows File Explorer and select the "View" menu (File, Home, Share View, etc.)....pick "View";
- Select "Options";
- Select "View" again from the three tabs available in "Folder Optinon" (i.e., from General, View and Search). Select "View".
- Scroll down the list of items and look for "Launch folder windows in a separate process":
- MAKE SURE THE BOX IS CHECKED, and then click on "Apply" and then click on "OK" and close Windows File Explorer.
- Re-launch (or open) File Explorer again and voila' you will have your old Windows 10 ribbon in Windows 11.
If you want to switch back to the abbreviated Windows 11 icons instead of the Windows 10 ribbon, just reverse the process and uncheck the "Launch folder windows in a separate process box" so that it is unchecked.
Easy peasy. No need to edit the registry.
BTW, this isn't something I came up with. I saw it somewhere else two days ago, but now I cannot recall where I found it. Anyway, someone else deserves credit for finding this one....I'm just passing it along. Have fun.