

My suggestion would be Firefox ESR, an extended support release of the browser. This leaves Mozilla Firefox (or a Firefox-based browser) or Internet Explorer, and while both should work fine, I'd suggest you select Firefox for that as you can install a second copy of the browser easily, or use another profile instead exclusively for plugin related content. You may use a browser like Pale Moon in that case, as it continues to support NPAPI plugins. Update: Please note that plugins are on their way out in the Firefox web browser as well. This includes Google Chrome and other Chromium-based browsers such as Vivaldi or Opera, and Microsoft Edge. Thanks to Daniel B for pointing this out.A couple of browsers cannot be used for this because of missing support for plugins. The next ESR release will be based on Firefox Quantum and will probably not support Java. At least for now - the ESR version 52.x will be supported at least until August 2018. So realistically, if you need Java in Firefox, your only option is Firefox ESR. (Extended Support Release) of Firefox 52 will continue to support In case you’re not yet ready for this transition to happen, the ESR Specifically for people like you who still need features from older versions of Firefox, there is the ESR (Extended-support release) version of Firefox. I don't know how difficult this would be (maybe some parts of NPAPI were already removed because Flash does not need them), but unless you have experience in software development and specifically in C++, it will be a lot of work (as in weeks or even months). It is probably true that the "NAPI interface still exists for Flash", but to use it to load the Java plugin, you would have to create your own modified build of Firefox. Firefox as provided by Mozilla no longer supports NPAPI plugins, except for Flash, and there is no way to re-enable them. No, there is not, at least not if you use an official binary provided by the Mozilla foundation. Use an ESR release (as of 2018) if you need Java. But since the NAPI interface still exists for flash (why!?) is thereĪny way to force Firefox 53+ to load the java plugin that is alreadyĪvailable to it and it stubbornly refuses to load?
