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Java Deployment Toolkit plug-in is blocked. I now cannot view media on certain pages. Is there a fix?


Java Deployment Toolkit plug-in is blocked. It is still enabled, but FF is blocking it all the same. I now cannot view media on certain pages. Is there a fix? Are you going to offer a secure replacement?

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.25.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Google Update
  • Shockwave Flash 11.8 r800
  • Adobe Shockwave for Director Netscape plug-in, version
  • 5.1.20513.0
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.03
  • Unity Player 4.1.3f3
  • GEPlugin
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers


  • Firefox 22.0
  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0
  • Support URL: http://support.mozilla.org/1/firefox/22.0/WINNT/en-US/


  • 4chan Extension (extension@4chan.org)
  • Adblock Plus 2.3.2 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d})
  • Adblock Plus Pop-up Addon 0.8 (adblockpopups@jessehakanen.net)
  • Advanced SystemCare Surfing Protection 1.0 (ascsurfingprotection@iobit.com)
  • Cleanest Addon Manager 7.0 (cam@sdrocking.com)
  • Click&Clean 4.1 (clickclean@hotcleaner.com)
  • Facebook Phishing Protector 4.4.2 ({023e9ca0-63f3-47b1-bcb2-9badf9d9ef28})
  • Full Screen Image Viewer 5.0 (imageviewer@toptip.ca)
  • Google Translator for Firefox (translator@zoli.bod)
  • JavaScript Debugger 0.9.89 ({f13b157f-b174-47e7-a34d-4815ddfdfeb8})
  • JS Deminifier 1.0.8 (jsdeminifier@murphy.ben.name)
  • klout 1.6 (kwtr-for-firefox@klout.com)
  • Long URL Please 0.5.1 (longurlplease@darragh.curran)
  • QuickJava 1.8.0 ({E6C1199F-E687-42da-8C24-E7770CC3AE66})
  • Think Context 0.93 (jid0-TgUunRgcCYuVnWCzbw3bV96wGAI@jetpack)
  • Thumbnail Zoom 1.4.3 ({E10A6337-382E-4FE6-96DE-936ADC34DD04})
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Updated Ad Blocker for Firefox 11+ 0.7.7 ({4DC70064-89E2-4a55-8FC6-E8CDEAE3618C})


  • incrementalGCEnabled: True


  • adapterDescription: Intel(R) G33/G31 Express Chipset Family
  • adapterDescription2:
  • adapterDeviceID: 0x29c2
  • adapterDeviceID2:
  • adapterDrivers: igdumd64 igdumdx32
  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterVendorID: 0x8086
  • adapterVendorID2:
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'blockedDriver']
  • directWriteEnabled: False
  • directWriteVersion: 6.2.9200.16571
  • driverDate: 9-23-2009
  • driverDate2:
  • driverVersion:
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'skia', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'none'}
  • isGPU2Active: False
  • numAcceleratedWindows: 0
  • numAcceleratedWindowsMessage: [u'']
  • numTotalWindows: 1
  • webglRenderer: Google Inc. -- ANGLE (Intel(R) G33/G31 Express Chipset Family)
  • windowLayerManagerType: Basic

Modified Preferences

  • accessibility.browsewithcaret: True
  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.cache.memory.capacity: 65536
  • browser.display.show_image_placeholders: True
  • browser.places.smartBookmarksVersion: 4
  • browser.privatebrowsing.autostart: True
  • browser.privatebrowsing.dont_prompt_on_enter: True
  • browser.search.param.yahoo-fr: chr-greentree_ff&ilc=12&type=198484
  • browser.startup.homepage: http://www.yahoo.com/
  • browser.startup.homepage_override.buildID: 20130618035212
  • browser.startup.homepage_override.mstone: 22.0
  • browser.startup.homepage_override_url: http://search.speedbit.com/?s=D1Pa
  • browser.urlbar.autocomplete.enabled: True
  • browser.urlbar.autofill: True
  • dom.max_script_run_time: 30
  • dom.mozApps.used: True
  • dom.w3c_touch_events.expose: False
  • extensions.lastAppVersion: 22.0
  • gfx.direct2d.disabled: True
  • layers.acceleration.disabled: True
  • network.cookie.prefsMigrated: True
  • network.http.max-connections: 32
  • network.http.max-connections-per-server: 8
  • network.http.max-persistent-connections-per-proxy: 8
  • network.http.max-persistent-connections-per-server: 4
  • network.http.pipelining: True
  • network.http.pipelining.maxrequests: 8
  • network.http.proxy.pipelining: True
  • network.http.request.max-start-delay: 0
  • places.database.lastMaintenance: 1375411601
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • plugin.expose_full_path: True
  • plugin.importedState: True
  • plugin.state.flash: 2
  • plugin.state.java: 2
  • plugin.state.npdeployjava: 2
  • plugin.state.npovshelper: 0
  • plugin.state.nppl: 0
  • plugin.state.nprpjplug: 0
  • plugin.state.npvlc: 0
  • privacy.cpd.offlineApps: True
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • privacy.sanitize.timeSpan: 0
  • security.csp.enable: False
  • security.OCSP.enabled: 0
  • security.warn_viewing_mixed: False
  • storage.vacuum.last.index: 1
  • storage.vacuum.last.places.sqlite: 1374111521


  • User JS: Yes
  • Accessibility: No
  • Top 25 Contributor
  • Moderator
622 solutions 8019 answers

This is not really intended as a discussion forum, and maybe the Java block was removed.

You will not get developers attention here.

Better to

odman 0 solutions 1 answers

Today 18-Jan-1014 I was forced to update java to be able to run a site that uses it. My Java version is now 7.0.510.13. I keep getting blocked messages, the more info says: Java Plug-in Using JRE version 1.7.0_51-b13 Java HotSpot(TM) Client VM User home directory = C:\Users\kodman

c: clear console window f: finalize objects on finalization queue g: garbage collect h: display this help message l: dump classloader list m: print memory usage o: trigger logging q: hide console r: reload policy configuration s: dump system and deployment properties t: dump thread list v: dump thread stack x: clear classloader cache 0-5: set trace level to <n>

I have activated and enabled everything. I really need this to run. BTW I can't get it to run in IE either. Ideas?

UPDATE! It has nothing to do with Mozilla at all. After upgrading Java the Java Control Panel shut it down by default. The solution is here: http://www.java.com/en/download/help/jcp_security.xml#control%20panel

It will look like a Mozilla problem since that's where the error message pops up, but this is a false alarm. Suggestion to developers: It there any way we could give the user more info than "your security setting has blocked an untrusted application from running"?

Modified by odman

  • Top 25 Contributor
  • Moderator
191 solutions 1966 answers


You are replying to a question posted August 2, 2013 by someone else (this question will be archived 180 days from that date, on or about Feb 1 2014).

See Forum rules and guidelines: ... For support requests, do not re-use existing threads started by others, even if they are seemingly on the same subject.

If you have a question about Firefox, you can use the link in the Get community support article or this one:

If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback... or use this link: https://input.mozilla.org/feedback

HOWEVER, you wrote, It will look like a Mozilla problem since that's where the error message pops up, but this is a false alarm. Suggestion to developers: It there any way we could give the user more info than "your security setting has blocked an untrusted application from running"?

That's actually a JAVA error message:

Java security prompts

Starting in Java 7 Update 21, even though you activate Java, you'll still see a security dialog (such as the one shown in this screenshot) asking you to confirm that you want the Java content to run. See the Java Help page What should I do when I see a security prompt from Java? and Oracle's Java Control Panel documentation for more information.

If you see an "Application Blocked" dialog with a message such as Your security settings have blocked an untrusted application from running, then Java has blocked the content for security reasons. Starting in Java 7 Update 51, Java applications and applets with certificates from an untrusted source (self-signed) and those with no certificate or missing application Name and Publisher information (unsigned), are blocked by default. Sites that would normally be blocked based on your Java Security settings can be added to the Exception Site list via the Java Control Panel, as explained here and in the Java Help page How can I configure the Exception Site List?. The Java Help page Why are Java applications blocked by your security settings with the latest Java? includes steps to Add URLs to the Exception Site list and mentions some common Java applications that are now blocked. For more information (including instructions specific to Mac OS) see this wordpress article.

Above is copied from http://kb.mozillazine.org/Java#Java_security_prompts