Hi ADF34,
I branched your comment to a new thread as it is a different issue from the original thread.
In your case, the online installer appears to be having difficulty communicating with our servers. Please use the standalone/offline installer posted at the bottom of this page Installation problems | Flash Player | Windows. There are two installers, one for Internet Explorer and one for other browsers. If you use IE and non-IE browsers you'll want to install both Flash Player types.
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Maria