What exactly means "won't let me"?
Did you run Windows Update?
When I attempt to update it says it is already installed embedded in IE
Windows 8. When i go to Windows update page it does not have Flash Player as
an update just Bing.
In a message dated 9/19/2013 12:48:58 A.M. Pacific Daylight Time,
Re: Windows 8 and keeps asking to install Flash Player
created by Pat Willener (http://forums.adobe.com/people/pwillener) in
Installing Flash Player - View the full discussion