I am trying to update my Flash Player on an older pc that we use exclusively for Pandora (which wants me to upgrade Flash).
It is Windows XP and I used Firefox to download the file "Flashplayer23_ga_install(1).exe"
When I double click on this file nothing happens. Need help please
This is most likely due to a certificate signing issue. Windows XP (except for XP with Service Pack 3) is lacking support for the latest signing technologies. You can try using the offline installer posted at the bottom of the Installation problems | Flash Player | Windows 7 and earlier page in the 'Still having problems' section, however, there is no guarantee it'll work. See Security Advisory 2880823: Recommendation to discontinue use of SHA-1 - Security Research & Defense - Site Home - TechN…for more information.
What Service Pack, if any, do you have installed on your XP system?
If you don't have Service Pack 3 installed, you'll need to install it, at minimum, for the installer to work. The latest Flash Player installers are signed using SHA-256 signing certificates. Older versions of XP do not support SHA-256.