Clarification about JNLP files
Hello all,
I've read some bug reports and discussions about the JNLP files blocked in Firefox ( JNLP should be treated as executable , Should not treat JNLP files as Executables (revert bug 1392955) on ESR-68 , Improve usability for JNLP and other executables and JNLP should not be considered an executable extension ). All I'm understanding is it has been blocked since Firefox 67, then "allowed" back again, then blocked for security purposes in Firefox 78. To sum it up, the bug 1576762 is still open, JNLP are still blocked. Nowadays, it's not possible to directly launch a JNLP file, you've got to download it and run it thereafter. Am I right ?
Also, I've taken note of the Firefox ESR release "too late". I've installed the "mainstream" Firefox release on a server in order to be remotely used by end users (via a RDS server, only to browse a internal website, they can't browse the web). What are the results/differences/cons (except the extended support) ?
Thanks in advance for your replies. Jo.
All Replies (7)
There is a pref available that you need to create as a new Boolean pref on the about:config page.
- browser.download.skipConfirmLaunchExecutable
You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".
Hi cor-el,
Actually, I've seen what you suggest on my previous question. Currently, the only solution is "Save file" (or cancel...). I'd like to have the choice between "Open" and "Save" or if it's not possible, I'd like to directly run/launch the jnlp file right after the download.
I've tried with the "Applications" section in Firefox settings but it doesn't work.
Thanks for you help. Jo
Does anyone have any idea please ?
Jo
Did you create a new Boolean pref browser.download.skipConfirmLaunchExecutable = true like I posted above, as that would suppress the prompt ?
Hello cor-el,
I did. Actually, I've followed what was said in my previous question. I also followed these two tutorials : - how to configure firefox to autorun jnlp files (java web start) - Windows 10 - Firefox with Java Web Start
But none of them worked. The Applications settings in Firefox's options wasn't saved. I chose the program to open the JNLP files (Java Web Launcher), closed my browser and opened it back again and the setting was set to "Always ask".
I've installed the last Firefox ESR version this weekend and the behaviour isn't the same (as the "standard" Firefox). I got back the "Open with" choice. But now, the JNLP extension doesn't appears in the Firefox Applications settings. It's closer to what's expected from my end-users. I'm gonna be eager but I guess there's no way to have a "one-click" solution (just a click on the button and the JNLP is downloaded, opened and launched --> that would be perfect for them) ? Thanks in advance.
Jo
Hi Jo, is your second screenshot --
-- what you get now after creating the browser.download.skipConfirmLaunchExecutable boolean preference set to true? Or was that from a different Firefox?
I think you should consider switching the managed installation to the Extended Support Release of Firefox 78 since you won't have to contend with monthly feature changes that could create extra support issues. See: Choose a Firefox update channel.
(fixed the missing second closing bracket- c)
Modified by cor-el
Hello jscher,
Actually, I never got that screen with the managed installation. With or without the boolean preference. This screen has appeared from the moment I installed Firefox 78.4.0 ESR (I uninstalled Firefox 81 managed installation). I'll stick to that release channel. Thanks.
Jo