windows 8 - How to add a Deny ACE for TrustedInstaller?

I'm having trouble deleting a file/folder. The operating system claims its in use even though its old and subject to deletion. The same problem occurs on occasion under both Windows 8 and Windows 10.

I was able to place a Deny ACE on the object for SYSTEM, but I am having trouble putting one on the object for TrustedInstaller (or Trusted Installer). It appears there is no security principal named TrustedInstaller in the SAM database, or the operating system is filtering results so I can't use the name:

How do I add a Deny ACE to an object for the TrustedInstaller security principal?

Answer

You have to use NT Service\TrustedInstaller as entry to select TrustedInstaller permissions.

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