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Firefox has no JNLP association how do I make one?

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I have downloaded a JNLP file from http://phet.colorado.edu/en/simulations/category/physics for a physics class that I'm taking, but the file will not load or start in Firefox. Java Web Start has already been installed by the system administrator but there is no file association for, nor is there a "JNLP" file type listed in Firefox --> Tools --> Options --> Applications

How can this be fixed so that the "JNLP" file type is listed in Firefox --> Tools --> Options --> Applications?

If you can get me that far I can do the rest by making the file association to javaws.exe. Thanks.

I have downloaded a JNLP file from http://phet.colorado.edu/en/simulations/category/physics for a physics class that I'm taking, but the file will not load or start in Firefox. Java Web Start has already been installed by the system administrator but there is no file association for, nor is there a "JNLP" file type listed in Firefox --> Tools --> Options --> Applications How can this be fixed so that the "JNLP" file type is listed in Firefox --> Tools --> Options --> Applications? If you can get me that far I can do the rest by making the file association to javaws.exe. Thanks.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.7 r700
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Next Generation Java Plug-in 10.11.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
  • PDF-XChange Viewer Netscape Gecko Plugin
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.5.635
  • 5.1.10411.0
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • DRM Netscape Network Object
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • Rhapsody Player Engine Plugin

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

{"libraryVersions": {"NSSSMIME": {"minVersion": "3.14.1.0 Basic ECC", "version": "3.14.1.0 Basic ECC"}, "NSSUTIL": {"minVersion": "3.14.1.0", "version": "3.14.1.0"}, "NSS": {"minVersion": "3.14.1.0 Basic ECC", "version": "3.14.1.0 Basic ECC"}, "NSSSSL": {"minVersion": "3.14.1.0 Basic ECC", "version": "3.14.1.0 Basic ECC"}, "NSPR": {"minVersion": "4.9.4", "version": "4.9.4"}}, "javaScript": {"incrementalGCEnabled": true}, "accessibility": {"forceDisabled": 0, "isActive": false}, "application": {"userAgent": "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0", "supportURL": "http://support.mozilla.org/1/firefox/18.0/WINNT/en-US/", "version": "18.0", "name": "Firefox"}, "modifiedPreferences": {"browser.display.background_color": "#000000", "network.cookie.prefsMigrated": true, "browser.places.smartBookmarksVersion": 4, "accessibility.typeaheadfind.flashBar": 0, "browser.search.update": false, "browser.startup.homepage_override.mstone": "18.0", "browser.privatebrowsing.autostart": true, "browser.display.foreground_color": "#CCCCCC", "browser.tabs.onTop": false, "browser.urlbar.autocomplete.enabled": false, "browser.startup.homepage": "http://www.whatcom.ctc.edu/", "privacy.sanitize.migrateFx3Prefs": true, "font.internaluseonly.changed": true, "browser.search.useDBForOrder": true, "browser.cache.disk.smart_size.first_run": false, "browser.urlbar.trimURLs": false, "extensions.lastAppVersion": "18.0", "browser.cache.disk.smart_size.use_old_max": false, "network.automatic-ntlm-auth.trusted-uris": "help.whatcom.edu", "browser.cache.disk.capacity": 358400, "browser.startup.homepage_override.buildID": "20130104151925", "browser.display.use_document_colors": false, "places.history.expiration.transient_current_max_pages": 53427, "dom.mozApps.used": true, "browser.cache.disk.smart_size_cached_value": 358400, "places.database.lastMaintenance": 1368639173, "security.warn_viewing_mixed": false}, "extensions": [{"version": "2.2.4", "name": "Adblock Plus", "isActive": true, "id": "{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}"}, {"version": "0.7", "name": "Adblock Plus Pop-up Addon", "isActive": true, "id": "adblockpopups@jessehakanen.net"}, {"version": "1.68", "name": "BetterPrivacy", "isActive": true, "id": "{d40f5e7b-d2cf-4856-b441-cc613eeffbe3}"}, {"version": "5.0.1", "name": "CLEO", "isActive": true, "id": "CLEO@guid.customsoftwareconsult.com"}, {"version": "2.0.16", "name": "DownThemAll!", "isActive": true, "id": "{DDC359D1-844A-42a7-9AA1-88A850A938A8}"}, {"version": "1.2.3", "name": "DownThemAll! AntiContainer", "isActive": true, "id": "anticontainer@downthemall.net"}, {"version": "1.2.3", "name": "Element Hiding Helper for Adblock Plus", "isActive": true, "id": "elemhidehelper@adblockplus.org"}, {"version": "7.1.0", "name": "FEBE", "isActive": true, "id": "{4BBDD651-70CF-4821-84F8-2B918CF89CA3}"}, {"version": "3.1.9", "name": "Grab and Drag", "isActive": true, "id": "{477c4c36-24eb-11da-94d4-00e08161165f}"}, {"version": "0.5.4", "name": "Image Zoom", "isActive": true, "id": "{1A2D0EC4-75F5-4c91-89C4-3656F6E44B68}"}, {"version": "4.0", "name": "OPIE", "isActive": true, "id": "OPIE@guid.customsoftwareconsult.com"}, {"version": "6.2.0", "name": "PrefBar", "isActive": true, "id": "{8A6C82A1-F6C9-481a-AAE7-C96444C9A754}"}, {"version": "9.1", "name": "Print Edit", "isActive": true, "id": "printedit@DW-dev"}, {"version": "0.1.9.0", "name": "Print pages to PDF", "isActive": true, "id": "printPages2Pdf@reinhold.ripper"}, {"version": "0.5", "name": "Restart Firefox", "isActive": true, "id": "restart@restart.org"}, {"version": "0.8.0.6", "name": "Session Manager", "isActive": true, "id": "{1280606b-2510-4fe0-97ef-9b5a22eafe30}"}, {"version": "2.4.1", "name": "Thumbnail Zoom Plus", "isActive": true, "id": "thumbnailZoom@dadler.github.com"}, {"version": "1.1a", "name": "Troubleshooter", "isActive": true, "id": "troubleshooter@mozilla.org"}, {"version": "0.0.0", "name": "Microsoft .NET Framework Assistant", "isActive": false, "id": "{20a82645-c095-46ed-80e3-08825760534b}"}], "graphics": {"directWriteEnabled": false, "driverDate": "10-14-2005", "adapterVendorID2": "", "driverVersion": "6.14.10.4410", "numAcceleratedWindowsMessage": ["tryNewerDriver", "6.1400.1000.4926"], "driverDate2": "", "adapterDeviceID": "0x2772", "adapterDescription": "Intel(R) 82945G Express Chipset Family", "directWriteVersion": "0.0.0.0", "webglRendererMessage": ["tryNewerDriver", "6.1400.1000.4926"], "driverVersion2": "", "adapterVendorID": "0x8086", "direct2DEnabled": false, "adapterRAM": "Unknown", "adapterDrivers2": "", "isGPU2Active": false, "adapterRAM2": "", "numTotalWindows": 1, "direct2DEnabledMessage": ["blockedDriver"], "info": {"AzureContentBackend": "none", "AzureCanvasBackend": "cairo", "AzureFallbackCanvasBackend": "none"}, "numAcceleratedWindows": 0, "windowLayerManagerType": "Basic", "adapterDeviceID2": "", "adapterDrivers": "ialmrnt5", "adapterDescription2": ""}}

jscher2000
  • Top 10 Contributor
8837 solutions 72222 answers

Is the file supposed to open externally in Java Web Starter? The combination of choosing a program using the Browse button and checking the box to do that from now on should add a new preference for you. Otherwise, there isn't a straightforward way to do it (the format of records in mimeTypes.rdf doesn't seem well documented).

If the file is supposed to be handled by the Java plugin, I wonder whether the setting in the Java Control Panel (see attached) will make any difference?

Is the file supposed to open externally in Java Web Starter? The combination of choosing a program using the Browse button and checking the box to do that from now on should add a new preference for you. Otherwise, there isn't a straightforward way to do it (the format of records in mimeTypes.rdf doesn't seem well documented). If the file is supposed to be handled by the Java plugin, I wonder whether the setting in the Java Control Panel (see attached) will make any difference?
cor-el
  • Top 10 Contributor
  • Moderator
17673 solutions 159870 answers

Note that these files are send as application/x-java-jnlp-file (Java Network Launched Application), so this MIME type needs to be registered to get the JavaWS (Java Web Starter) program offered as the default choice.

  • HKEY_CLASSES_ROOT\.jnlp
  • HKEY_CLASSES_ROOT\MIME\Database\Content Type
Note that these files are send as application/x-java-jnlp-file (Java Network Launched Application), so this MIME type needs to be registered to get the JavaWS (Java Web Starter) program offered as the default choice. * HKEY_CLASSES_ROOT\.jnlp * HKEY_CLASSES_ROOT\MIME\Database\Content Type *http://kb.mozillazine.org/Register_protocol

Question owner

Sorry I should have mentioned that I'm using Linux. Specifically: Kubuntu 12.04

Since this was a java problem, I thought it could be fixed within firefox.

jscher2000: When I try your suggestion I get no option to browse for a file to open it with, and the only option is IceTea Java Webstart. When I click on that I get the error message: /tmp/faraday_en.jnlp could not be opened, because an unknown error occurred. ...and this same error occurs no matter what jnlp file firefox is trying to open.

Cor-el: As I stated in this post I'm using Linux so there is no registry to edit, and as such your solution doesn't apply to my setup. There should be a configuration file someplace on Linux to do something similar but I'm not sure how or where to even begin looking or even what to search for in google to figure that out. So I'm basically stuck.

Thanks for the input. Any other Linux based solutions would be greatly appreciated.

Sorry I should have mentioned that I'm using Linux. Specifically: Kubuntu 12.04 Since this was a java problem, I thought it could be fixed within firefox. jscher2000: When I try your suggestion I get no option to browse for a file to open it with, and the only option is IceTea Java Webstart. When I click on that I get the error message: /tmp/faraday_en.jnlp could not be opened, because an unknown error occurred. ...and this same error occurs no matter what jnlp file firefox is trying to open. Cor-el: As I stated in this post I'm using Linux so there is no registry to edit, and as such your solution doesn't apply to my setup. There should be a configuration file someplace on Linux to do something similar but I'm not sure how or where to even begin looking or even what to search for in google to figure that out. So I'm basically stuck. Thanks for the input. Any other Linux based solutions would be greatly appreciated.
cor-el
  • Top 10 Contributor
  • Moderator
17673 solutions 159870 answers

I'm on Linux as well and don't have a problem with the jnlp files.
I get a pop-up window (normal Firefox open with dialog) with JavaWS selected as the default application to handle this file.

I'm on Linux as well and don't have a problem with the jnlp files.<br /> I get a pop-up window (normal Firefox open with dialog) with JavaWS selected as the default application to handle this file. *http://www.google.com/search?q=file+association+linux *http://askubuntu.com/questions/16580/where-are-file-associations-stored