Deployment Failures with SCCM 2012 and Flash Player 20
I realize this thread is old, but the issue is still on going! I recently deployed 20.0.0.306 both Plugin and ActiveX and like everyone else, ActiveX didn't install properly. After playing around with different solutions we found that simply copying all the contents from the C:\Windows\SysWOW64\Macromed\Flash folder of a working install to one that's broken and register the Flash32_20_0_0_306.ocx file by doing a regsvr32 it worked! So basically I'm just running a batch file like this, deploying via SCCM 2012.
xcopy %~dp0\Flash C:\Windows\SysWOW64\Macromed\Flash /c /y
regsvr32 C:\Windows\SysWOW64\Macromed\Flash\Flash32_20_0_0_306.ocx
I haven't tried deploying the exe like others have mentioned. That may be an easier solution.
I've also reported the bug to Adobe, feel free to report it as well
