There have been reports of some users on a case-to-case basis that Macromedia Flash Player is not working in their web browsers, specifically in Internet Explorer 7 both in Windows XP and Windows Vista even if they have downloaded it already. Though currently I’m not sure as to why this happens (because previously there this isn’t an issue), there are ways to solve this problem.
The fix this, the workaround is not to install and uninstall the add-on/plug-in, which seems to be ineffective. Here’s what you can do:
Close all Internet Explorer windows and related applications.
Run Command Prompt (as an Administrator if you’re on Windows Vista).
Go to C:\Windows\System32\Macromed\Flash (or C:\Windows\SysWOW64\Macromed\Flash on Windows 64-bit).
Run FlashUntil9d.exe (or similar executable file inside the folder) and follow the instructions to install.
Restart your computer (sometimes you don’t really need to do this, but it’s better follow instructions
).
Macromedia Flash Player problems with Internet Explorer 7? – Life as an Evangelist