Many people will encounter problems with INTERNETEXPLORER9 Flash content that cannot be played. The page will pop up to upgrade the Flash plugin prompts, while the Flash plug-in upgrade after the Refresh page is still popping up before the upgrade prompts.
Tutorial First, let's check to see if the Flash plugin (shockwaveflashobject) is disabled.
Click the button in the upper-right corner of the IE9 page to open Manage Add-ins.
Check the status of the Shockwaveflashobject. If it is really disabled, select it, then right-click and select Enable.
To enable the Flash plug-in (shockwaveflashobject) If you still can't open flash, you can think about whether and IE9 new features ActiveX filtering.
If this feature is enabled, the Flash page will have the same effect as if the Flash plugin is not installed.
See if there's a blue hint icon in the address bar.
If so, click the icon, and then select "Turn off ActiveX filtering."
Ps:
"Turn off ActiveX filtering" Here is only valid for the current page, and if you want to apply this setting to all pages, click "Tools-> Security->activex Filter" To remove the check for ActiveX filtering.