Downloaded flashplayer to a Windows XP/Mozilla browser and get "unknown publisher" error when I open it and try to run.Tells me it is not a valid Win32 Application. How to fix?
That means that the download is corrupted; download it again.
Or download the offline installer from http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#mai n-pars_header
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