New
#11
TrustedInstaller, as I said, is a Service - and as such it has special privileges, and will be in the background most of the time. ANYTHING that requires special file access to the winsxs folder, or any file associated with that folder, has to go through the TrustedInstaller service to do it, and the whole folder and content are owned by the service, and even the System account doesn't have modification rights there.
TrustedInstaller isn't 'in control' of SFC as such - but without TrustedInstaller, SFC can do none of the maintenance tasks it's designed to accomplish.
Your 'Other User' flags are worrying, though.
How many users exist on this machine?
What level user are they?
What account do you routinely work in? - is UAC switched on or not?