Windows Explored

I found myself needing to install an older version of Flash Player for troubleshooting purposes. After uninstalling the current Flash Player, I encountered the following error when trying to install the older Flash Player: “The installation encountered errors: The version of Adobe Flash Player that you are trying to install is not the most current version…”
The installer queries the version data in this key and compares it against the version being installed. This is Adobe’s way of insuring you do not install a version of Flash Player that is older than the version that is currently installed:

Ideally, when Adobe Flash Player is uninstalled, the version data in the registry should be removed(?). The registry data in question is located in HKLM\Software\Macromedia\FlashPlayerPlugin and has a string value equal to the most recent version of Flash Player that was installed:

To resolve, simply delete the FlashPlayerPlugin key and run the installation again.