Right click - new folder only....

Hey, thanks so far for your detailed answer. Here is want I checked.

User Account Control: Admin Approval Mode for the Built-in Administrator account – Is Enabled.
User Account Control: Run all administrators in Admin Approval Mode – Is Enabled.

EnableLUA = 1 -> Reboot -> User has limited Set of New
EnableLUA = 0 -> Reboot -> User has full Set of New
EnableLUA = 1 -> Reboot -> User has limited Set of New

Cannot reproduce that a newly created local Administrator can see the full set of "New" options.

EnableLUA = 1 -> Reboot -> User has limited Set of New
EnableLUA = 0 -> Reboot -> User has full Set of New
Created new Local Administrator
EnableLUA = 1 -> Reboot -> Login with new User -> Limited Set of New

Added Local Admin explicit on NTFS permission on C:\Driver --> Full Set of new at this directory

Check permissions under HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers
-> contains <host>\Administrators with Full Access
But also an unknown account - might be from the previous capturing ? (MasterImage)

In MDT I disabled the task for setting the security policies (C.I.S.).
But even without this policies I see the same behaviour.

What do you think is the fault ? Is it more a windows bug or a configuration mistake ? But I do not know what would cause this behaviour. I cannot explain to myself why a user which is part of the local administrator group does not have write permissions on folders, when the security tab is showing those permissions.

Do you think it is worth to use icalcs.exe to re-set the permissions on drive C: to user group administrators before finishing the installation ?

By the way, partion D: which gets created during the setup does have normal permissions and I see the full options set of New.

Tried to add an extra mdt task to reset the ntfs permissions for the local administrator group, but with the same result. 😔