The first thing you should try is to make sure that you have the latest Java. Java security settings are set too high.You are using outdated Java (below Oracle's security baseline).Mozilla Firefox currently unsupported due to performance limitations. If a web page with Java Uploader or Downloader displays correctly, but does not upload or download chosen files, this may mean two things: display driver needs to be uninstalled (its an incompatible old legacy WDDM. If you click the Allow now button, you will encounter this problem again when visiting other web pages that use Java.
Once defined through policy or the Enterprise mode site list, users can automatically open a predefined set of URLs in Internet Explorer and switch back to Firefox when. When you click Allow and Remember Firefox adds the current webpage to an internal whitelist, whereby the Java applet will run automatically in the future without further intervention. The Legacy Browser Support extension allows Windows users to maintain compatibility with websites that use legacy technologies while using Firefox as a primary browser.
