In order to support .flv and .fla file types on Windows 8 and Windows Server 2012 and newer there are a few additonal steps to take.
- Navigate your web browser to: https://get.adobe.com/flashplayer/
- Select the link that says: “Do you have a different operating system or browser?”
- In the Step 1 drop down, select “Windows 7/Vista/XP/2008/2003”
- In Step 2 drop down, select “FP <current version> for Internet Explorer - ActiveX”
- Download and install the resulting file.