I had the same problem, but when I disabled my antivirus avast, I could install
Obviously not. People keep asking the same questions over and over, and all I see is direction back to the same "help" pages that, if they had been any help, people wouldn't have come to the forum at all. Adobe's "customer service" is even worse than AT&T.
OK, so I just had another Adobe pop-up window appear on my Mac saying I need to update Flash. I figured why not give it another try, so I did and it worked this time. I have not changed anything on my computer, so it appears that Adobe has fixed the problem, whatever it was.
This morning we resolved a problem that prevented Flash Player installations from completing for some of our Macintosh users.
If you encountered this problem, please delete any previously downloaded Flash Player installer and either:
- Download the installer again from https://get.adobe.com/flashplayer, OR
- Download the stand-alone installer posted at the bottom of the http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-mac.html in the ‘Still having problems’ section.