What should I do if the Firefox browser fails to install the plug-in and prompts that this add-on cannot be installed?

What should I do if Firefox fails to install the plug-in and prompts that this add-on cannot be installed? Recently, a user asked this question. Firefox is a browser software that many users like very much. When installing the plug-in, it prompts that the installation failed. Why can't this add-on be installed? In response to this problem, this article brings a detailed solution to share with everyone. What should I do if the Firefox browser fails to install the plug-in and prompts that this add-on cannot be installed? 1. Open the software, enter about:config in the address bar above and press the Enter key.

2. After entering the new interface, click the Accept Risk and Continue button.

3. After entering the advanced preferences interface, enter xpinstall.signatures.required in the search box above and press Enter to search.

4. Finally, in the search results below, click the switch button on the right and change its value to true.

The above is the detailed content of What should I do if the Firefox browser fails to install the plug-in and prompts that this add-on cannot be installed?. For more information, please follow other related articles on the PHP Chinese website!