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You may download offline installer for Adobe Flash Player from here : http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#mai n-pars_header
I still cannot download it from here.
Download the Adobe Flash Player installer directly by right clicking one (or both) of the following links and selecting "Save target as" (IE) or "Save link as" (other browsers).
If you're unable to save those by right clicking, you have firewall or connection issues we cannot address here.