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Java not working in Firefox

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I am having trouble getting Java to work in Firefox (Opera too) on Mac. http://www.java.com/en/download/installed.jsp?detect=jre tells me "We are unable to verify if Java is currently installed and enabled in your browser." Notice that when I access the page, Firefox wants me to activate Java in a pop-up. I did this.

I know that Java is installed because I can open the Java Control Panel. The setting "Enable Java content in the browser" is checked and Security Level is set to High. I have tried setting the security level to a lower setting, but that doesn't help.

I have verified that the Java plugin is enabled. I have tried clearing Java cache via the control panel - no luck.

I realise that Apple has blocked Java according to this article: http://appleinsider.com/articles/13/01/31/apple-again-blocks-latest-version-of-java-through-os-x-anti-malware-system. I have been able to get Java to work with Safari (this doesn't help for Firefox) by editing the file /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta.plist, but that is only a temporary solution, as it shouldn't be necessary to do this edit.

Version details: Mac OS X 10.8.2 Firefox 18.0.1 Java version 7 update 11

I am having trouble getting Java to work in Firefox (Opera too) on Mac. http://www.java.com/en/download/installed.jsp?detect=jre tells me "We are unable to verify if Java is currently installed and enabled in your browser." Notice that when I access the page, Firefox wants me to activate Java in a pop-up. I did this. I know that Java is installed because I can open the Java Control Panel. The setting "Enable Java content in the browser" is checked and Security Level is set to High. I have tried setting the security level to a lower setting, but that doesn't help. I have verified that the Java plugin is enabled. I have tried clearing Java cache via the control panel - no luck. I realise that Apple has blocked Java according to this article: http://appleinsider.com/articles/13/01/31/apple-again-blocks-latest-version-of-java-through-os-x-anti-malware-system. I have been able to get Java to work with Safari (this doesn't help for Firefox) by editing the file /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta.plist, but that is only a temporary solution, as it shouldn't be necessary to do this edit. Version details: Mac OS X 10.8.2 Firefox 18.0.1 Java version 7 update 11

All Replies (6)

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Hello epb9, your solution is the only one that maybe works right now, see AliceWyman's reply in the next link: https://support.mozilla.org/en-US/forums/contributors/708898?last=50518#post-50518

thank you

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Yeah, it says that it is the only way to get it to work in FF. But that solution only works for Safari on my computer :(

I have now installed java 7 update 13. Now it works in Safari without any tweaks, but it still doesn't work in FF (or in Opera).

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What's this mean? > Java Plug-in 10.17.2.02 Using JRE version 1.7.0_17-b02 Java HotSpot(TM) Client VM User home directory = C:\Users\Wally


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>


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I'm having java 6.5 in my system. while opening one site i get error - Install mising plugin. . when i click on install. mozilla unable to find plugin. and while downloading manually the site

http://java.sun.com/products/archive/j2se/6u12/index.html NOT OPENING. pls resolve my issue.....
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hello milindpandey, please download java 7 update 21 directly from java.com.

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hey Philipp, Same problem arises.. after updating to java 7 update 21 again install missing plugin comes. i have jinitiator 1.3.22 installed. In internet explorer 7 and above my oracle ERP App. is working but in mozilla firefox any version its not working. even in safari browser its working. help me out plzz..