Missing Adobe Flash Player Plugin on Firefox 51

This section provides a tutorial example on what you will see on Firefox 51 with visiting a Web page that uses Flash without Adobe Flash Player Plugin installed.

What Is Adobe Flash Player Plugin? Adobe Flash Player Plugin is an add-on program for Firefox and other Netscape-compatible browsers that enables the browser to deliver multimedia information and interactivity programmed in SWF (Shockwave File).

If you do not have Adobe Flash Player Plugin installed and visit a Web site that uses the Flash technology with Firefox, you will get an error, or a prompt message to ask you to install it.

Without Adobe Flash Player installed, here is what I got on Firefox 51 with default settings:

1. Run Firefox 51 and visit the Adobe Flash Player test page at http://herongyang.com/Flash/SWFC-ActionScript-Space-Explorer-Stabilized.html. The test page will show an empty area with a missing plugin icon as shown below:
Missing Flash Player on Firefox 51

2. Read the error message below the missing plugin icon: "A plugin is needed to display this content."

Notice that unlike previous versions, Firefox 51 is not providing any links to allow you to install the Adobe Flash Plash Player plugin. This is because Adobe Flash is considered to be outdated and having high security risks. Firefox does not encourage you to visit Web sites that are using Flash content.

If you still want to view Adobe Flash content with Firefox, you need to download and install Adobe Flash Player plugin manually.

Last update: 2017.

Table of Contents

 About This Book

 Introduction of Adobe Flash

Adobe Flash Player Plugin for Firefox

Missing Adobe Flash Player Plugin on Firefox 51

 Adobe Flash Player 25 Installation with Adobe Installer

 Verifying Adobe Flash Player Installation for Firefox 51

 Removing Adobe Flash Player from Firefox 51

 Adobe Flash Player Plugin for Chrome

 Adobe Flash Player Plugin for Safari

 Adobe Flash Player ActiveX for IE

 Using "object" Elements for Flash Files

 Using "embed" Elements for Flash Files

 "mp3player" - MP3 Music Player

 SWFObject - Hidding "object" behind JavaScript

 Flash Player Projector

 SWFTools - SWF File Manipulation Tools

 SWFC Script to Generate Flash SWF Files

 ActionScript Embedded in SWFC Script

 AS3Compile - ActionScript 3 Compiler

 Adobe Flex SDK 4

 SWF File Structure and Tags

 SWF File Processing Rules

 SWF Files for Video and Audio Streams

 Outdated Tutorials

 References

 PDF Printing Version