I know how to edit the registry of other users. I load the hive into regedit and than change the values I want.
reg load HKU\test C:\Users\TestUser\ntuser.dat
This is no problem at all. But I noticed that there are not all values displayed that would need to be in HKEY_Current_User
I want to edit the settings in HKEY_Current_User\SOFTWARE\Classes Everywhere in the internet it says that the ntuser.dat is the HKEY_CURRENT_USER key of the other user. But there is no "Classes" entry in that hive.
So how do I edit those settings using the Registry Editor? Or is there any other possible way?
I found the answer: The Classes Key is outsourced and can be found here:
C:\Users\TestUser\AppData\Local\Microsoft\Windows\UsrClass.dat
Where TestUser is the username of the user. Load and edit as descibed in the question.