Download error

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trying to direct the current page for a download error console returns the following message:

Frame load interrupted by policy change

Source (javascript+html):

function Download(){
        window.location = "app.exe";
    }
    <a href="javascript:void(Download())">Start Download</a>

function Download(){
        window.location = "app.exe";
    }
    <a href="javascript:void(Download())">Start Download</a>

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Console Preview:

dwaSI.png

Should I configure something in the Compiler or QWebSettings?