Mod Edit: Split from http://www.bleepingcomputer.com/forums/t/568086/sfc-scannow-windows-resource-protection-could-not-perform-requested-operation/ - Hamluis.
I'm having the EXACT same issue. It all starteded with me trying to update itunes. After I installed the latest itunes update, it failed to update, and itunes wouldn't start. I tried uninstalling and reinstalling, but I haven't been able to get it to install since. To troubleshoot for this, it said in apple's forums that I should make sure Windows Updates are up to date. That failed, getting the same error code as stated earlier in this forum. I then troubleshooted for that, eventually trying the "sfc /scannow" in the command prompt, and getting the error message as above in quotes. I tried it in safe mode, and it STILL doesn't work. I'm now starting to think that my computer hates me...
Edited by hamluis, 26 April 2015 - 04:04 PM.
Split, PM sent new OP - Hamluis.