Hello maria516,

Would you try this please :

Type in the address bar about:config and press Enter (promise to be careful, if asked)

Type in the search bar and look for the preference :

browser.download.manager.alertOnEXEOpen

and set its value to false

Then close and restart Firefox.

Does that work  ?

Hi maria516, is the OK button working for you to launch the JNLP file -- you want to get rid of the extra step -- or is the OK button not working (or disabled)?

When I use Oracle's test file on this page, if I launch from the Downloads list, the file gets deleted, so that's a bit of a pain for testing.

Maria516, please ignore my previous post - "jscher2000" told me in a private message that the preference I asked you to toggle, has been disabled .....

It looks that another (hidden from about:config) pref got created to suppress the warning.

• browser.download.skipConfirmLaunchExecutable = true

• https://dxr.mozilla.org/mozilla-release/source/toolkit/components/downloads/DownloadUIHelper.jsm#115

cor-el said

It looks that another (hidden from about:config) pref got created to suppress the warning.

• browser.download.skipConfirmLaunchExecutable = true

Yes, that works. Here's how I tested:

(0) Select and copy the new preference name:

browser.download.skipConfirmLaunchExecutable

(1) In a new tab, type about:config in the address bar and press Enter/Return. Click the button accepting the risk -- this change involves some risk.

(2) In the search box above the list, type or paste EXE and pause while the list is filtered

(3) Right-click a blank space and click New, then Boolean.

• In the little dialog that comes up, paste the preference name and click OK.

• Click true and then click OK. (If you do not get the options of true and false, you might not have selected Boolean, so cancel and start again.)

Now when you launch a .jnlp or other executable from the Downloads list, it should go straight to the system without the intervening confirmation dialog. Not the safest thing if you tend to download questionable files, but more convenient.

(4) To switch this off, to protect against accidentally running other kinds of executables, double-click the browser.download.skipConfirmLaunchExecutable preference to switch the value from true to false (then in the future, when this is needed, double-click to switch it to true)

Thank you for you help, but this option in about:config in version Firefox 67 don't exist I need open the file many times and message is annoying for my work. I can't find a way to avoid it. Thanks!

maria516 said

Thank you for you help, but this option in about:config in version Firefox 67 don't exist

Would you please read jscher2000's post again, especially (3); that preference is hidden, hence you have to select "Boolean".

(who said that computers will make your life easier ..... ?)

Thank you very much !!! I tried and there I could. Really thanks (jscher2000 and McCoy).

(who said that computers will make your life easier .....?)

... and one would think that yes, after closing so many messages
 ; )

Regards.

I'm so glad that you got it right now - well done  !

I noticed that you marked my post as Chosen Solution, but it's jscher2000 who deserves the credits here ..... Would you be so kind as to rectify that Chosen Solution mark  ? You can do so by clicking on the "Undo" button to the right, and then mark jscher2000's post as such.

Thank you in advance, and sorry for putting you through all this trouble.

cor-el said

It looks that another (hidden from about:config) pref got created to suppress the warning.

• browser.download.skipConfirmLaunchExecutable = true

• https://dxr.mozilla.org/mozilla-release/source/toolkit/components/downloads/DownloadUIHelper.jsm#115

Thank you, this works for me.