In the Windows search bar, enter Command Prompt.
In the Command Prompt window, type this command and press Enter:
C:\Program Files\Common Files\Adobe\Adobe Desktop Common\RemoteComponents\UPI\UnifiedPluginInstallerAgent
In the Command Prompt window, type this command and press Enter:
UnifiedPluginInstallerAgent.exe /list all
You can also list installed plugins for a specific app by using this command: UnifiedPluginInstallerAgent.exe /list [app name]