How can I work around Windows File Protection such that I can rename a system file?

How do I use PendingFileRenameOperations to rename a file which is in use? Especially system files, like tcpip.sys. I have created a key PendingFileRenameOperations (REG_MULTI_SZ) in

HKLM\System\CurrentControlSet\Control\Session Manager

And wrote there something like this:

\??\C:\windows\system32\tcpip.sys \??\C:\windows\system32\tcpip.bkp

I have found that Windows File Protection doesn't let me do that. What's wrong with it?