Windows 7 Can't install update KB947821

[Silents429]

My system has corrupt files according to the "sfc /scannow" command and after running it 3 times I am suppose to use the windows readiness tool, and install additional updates, the first time this update came up it installed and i reset the system, running the .exe again the same update appears only there is no install loading bar. And it keeps on appearing.

Anyone know whats up?

 

[Josephur]

This update is notorious for getting "stuck", start it and let it run overnight it may finish.

 

[Silents429]

But it finished once as if it were like any other upate? I can't run it over night I have keep clicking the .exe they have you download.