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This error means that a plugin (like gmpopenh264) has crashed. Simply reloading the page will restart the plugin, and your video (or other content) will be shown again. Before reloading the page, you can send a crash report to Mozilla by clicking on . These crash reports help us make improvements to Firefox.
Table of Contents
What is a plugin?
A plugin is a piece of software that displays internet content that Firefox is not designed to display. This usually includes video, audio, online games and presentations that are made in patented formats. Plugins are created and distributed by the companies that make those patented formats. The Widevine CDM and OpenH264 plugins are still supported in Firefox but NPAPI plugins like Adobe Flash and Silverlight are not (see Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work? to learn more).
What is a crash?
A crash happens when a piece of software abruptly stops working. Plugins sometimes crash for various reasons and cause Firefox to crash along with it. For more information about Firefox crashes, see Troubleshoot Firefox crashes (closing or quitting unexpectedly). Some plugins load separately from Firefox, allowing Firefox to stay open if the plugin crashes.
What information is sent in a crash report?
Crash reports only include technical information to help Firefox developers determine what went wrong, and how to fix it. These reports do not include personal information. The information sent in a report includes:
- what webpage you were on
- version of Firefox you were using
- your operating system
- installed plugins
- installed extensions
- more technical info
This information is subject to the Firefox Privacy Policy.
How do I keep plugins from crashing?
Many problems with plugins can be solved by updating to the latest version of the plugin. The name of the plugin that crashed can be found in the error message.
