I can't install Flash 18 on Windows 7.

[rontel2222]

When I run flashplayer18_ha_install.exe, it opens the "Adobe Download Manager" window, but the window is blank.  From there nothing happens.

I've restarted the computer, which was ineffectual.  I attempted a system restore to an earlier point, but the computer wouldn't allow it because it couldn't locate a Firefox "Old Data" file of some sort.  Help, please.

[Carm01 · Accepted solution]

Well,

Try this 

Grab the Uninstaller here:

http://download.macromedia.com/get/flashplayer/current/support/uninstall_flash_player.exe

run it; it will uninstall ALL flash player versions

Next let make sure you have the correct processes closed.

Open a CMD prompt Run a Command as Administrator from the Windows 7 / Vista Run box

copy/paste the following one by one or make a bat file to do it all in one step How to Write a Batch File (with Examples) - wikiHow

taskkill.exe /im plugin-container.exe /f

taskkill.exe /im firefox.exe /f

taskkill.exe /im iexplore.exe /f

taskkill.exe /im flash* /f

taskkill.exe /im battle* /f

That should close any flash dependent programs ( that I know of )

next in the cmd window do the following:

ATTRIB -H -S -R C:\Windows\System32\Macromed\Flash /s /d

ATTRIB -H -S -R C:\Windows\SysWOW64\Macromed\Flash /s /d

rmdir "C:\Windows\System32\Macromed\Flash" /s /q

rmdir "C:\Users\%username%\AppData\Roaming\Adobe\Flash Player" /s /q

rmdir "C:\Users\%username%\AppData\Roaming\Macromedia\Flash Player" /s /q

IF exist C:\Windows\SysWOW64 rmdir "C:\Windows\SysWOW64\Macromed\Flash" /s /q

( note IF you are on 32 bit you can eliminate anything with sysWOW64 )

Next try installing the files at the bottom of this page one by one.

Installation problems | Flash Player | Windows

Hopefully that will get you up and running. ( why Adobe does not provide a bat file like i have and automate it is beyond me to simplify it for end users)

Good luck

[rontel2222]

Full functionality has been restored!  Thanks.

[Carm01]

no problem