New
#11
I have not known the restore default context items fail
Add or Remove Default New Context Menu Items in Windows 10
it must be - providing you used
Restore_ALL_default_New_context_menu_items.reg
that there is more than simply that aspect that is wrong as you say you cannot create a folder on the data drive
When you right click on the open data drive and hold on NEW - does the option folder appear but simply does not create the folder.
Do NOT be worries even if it comes to a reinstall - we are NOT there yet, but it will be a repair install from within windows, that will keep all your data, apps (programs), files and all personal data
Repair Install Windows 10 with an In-place Upgrade
This MAY have the makings of third party software that purports to make your computer go faster by stopping unnecessary services, cleaning the registry, etc.
DO YOU USE such software, even in clean boot when you could create the shortcut, but NOT the folder, that MAY be because the third party software has damaged the files of the system that allow the new folder, but the shortcut was allowed in the clean boot.
TRY logging in with the system account and see if you can create shortcut and folder on that account
Enable or Disable Elevated Administrator account in Windows 10
Option One, item 3
ENABLE