Install Failed in unreal 4.7.3

i open the unreal it checks for update and then it tells it is not installed i intalled it i wait after a short time it tells me

Install failed
The intaller failed to initialize

Hi delalgamal46,

We noticed that this is a duplicate post of this question: Install Failed in unreal 4.7.3 - Platform & Builds - Unreal Engine Forums

We will be closing this post in order to focus the discussion in one place.

Thanks,

TJ