You must run the MMC snapin in author mode, save the changes into a new MSC. Next you must take ownership of the original file and replace them in the System32 folder. Caution: This generates warning when you run sfc /scannow. It detects the files are damaged. I also gave it up, that MS stores the preferences in a better way. MMC needs to be replaced by a better way. It is simply too old (NT4 days) and unsable with UAC and TrustedInstaller.