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Misleading error message about Java plugin

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New User

Misleading error message about Java plugin

I am running Firefox 15.0.1 on Windows 7 64-bit I have Java plugin version SE7 U7, which I reinstalled and confirmed is current. However, when the Java plugin (Java(TM) Platform SE 7 U7 10.7.2.11) is disabled, then I get message when checking my plugins, "For your safety, Firefox has disabled your outdated version of Java. Please upgrade to the latest version". When I re-enable this plugin, the error message is not present. Thus it is misleading as the correct version is installed but disabled.

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Mozilla Support Contributor

Re: Misleading error message about Java plugin

Oh, I get it now.

The plugincheck page recognizes that Java is missing, and "assumes" that Java is missing because Firefox disabled it. This is a wrong assumption by the plugincheck page, but that page doesn't have special privileges to know that you actually do have the current version installed, so it's just making its best (wrong) guess. Unfortunately, I don't think there's any solution for that.

14 REPLIES
Mozilla Support Contributor

Re: Misleading error message about Java plugin

Sometimes the Java installer leaves old versions on the system; certainly with Java 6 this was an issue. You might check the Programs and Features control panel and remove any old stuff you find. Hopefully then Firefox won't see it any more.

Incidentally, going to Control Panel > Java (32-bit) > Update tab > Update Now says I have the latest build, which on the General tab > About says is "(build 1.7.0_07-b10)".

Site Moderator

Re: Misleading error message about Java plugin

You can try to delete the pluginreg.dat file in the Firefox Profile Folder and maybe addons.sqlite as well to reset the plugin registry databases.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder
New User

Re: Misleading error message about Java plugin

Thank you both.

I confirmed that my current version of Java is the latest: "(build 1.7.0_07-b11)".

However I did find 2 Java version 6 line items in the listing of Programs and Features. I uninstalled these both, restarted Firefox, still get same error message when Java is disabled.

I also deleted pluginreg.dat and addons.sqlite and restarted Firefox. Still getting same error message, "For your safety, Firefox has disabled your outdated version of Java. Please upgrade to the latest version." when checking plugins up-to-dateness.

Not a big problem, just an inconsistency from my point of view. (And in the context that I am having terrible problems with 15.0.1 frequently freezing up currently, may have to go back to 14.x).

Thank you.

Site Moderator

Re: Misleading error message about Java plugin

You can check the pluginreg.dat file to find the locations of the blocked Java plugin(s).

New User

Re: Misleading error message about Java plugin

Thank you, cor-el

I tried, but was not able to make much sense of the unformatted info in pluginreg.dat. Any suggestions (or should I forward it to the forum)?

Mozilla Support Contributor

Re: Misleading error message about Java plugin

In pluginreg.dat, which looks like a plain text file, search for C:\ to jump from one plugin to the next.

For the latest Java, I have this:

npjp2.dll|$
C:\Program Files (x86)\Java\jre7\bin\plugin2\npjp2.dll|$
10.7.2.10|$
1346962932482|0|5|$
Next Generation Java Plug-in 10.7.2 for Mozilla browsers|$
Java(TM) Platform SE 7 U7|$

There are a crazy number of QuickTime entries. I probably should delete this file and let Firefox regenerate it...

New User

Re: Misleading error message about Java plugin

Thank you,

Mine reads

npjp2.dll|$ C:\Program Files (x86)\Java\jre7\bin\plugin2\npjp2.dll|$ 10.7.2.11|$ 1347843071393|0|0|$ Next Generation Java Plug-in 10.7.2 for Mozilla browsers|$

Thus I apparently have the next build 10.7.2.11 compared to your 10.7.2.10 but otherwise not obviously remarkable.

Mozilla Support Contributor

Re: Misleading error message about Java plugin

Was that your only instance of the Java Plug-in? I think our suspicion was that you might have a second, older entry.

New User

Re: Misleading error message about Java plugin

If you refer to the pluginreg.dat file, here is what it includes regarding JAVA. I don't know how to interpret this information.:

Generated File. Do not edit.

[HEADER] Version|0.15|$ Arch|x86-msvc|$

[PLUGINS] npjp2.dll|$ C:\Program Files (x86)\Java\jre7\bin\plugin2\npjp2.dll|$ 10.7.2.11|$ 1347843071393|0|0|$ Next Generation Java Plug-in 10.7.2 for Mozilla browsers|$ Java(TM) Platform SE 7 U7|$ 38 0|application/x-java-applet|Java Applet||$ 1|application/x-java-bean|JavaBeans||$ 2|application/x-java-vm|||$ 3|application/x-java-applet;version=1.1.1|||$ 4|application/x-java-bean;version=1.1.1|||$ 5|application/x-java-applet;version=1.1|||$ 6|application/x-java-bean;version=1.1|||$ 7|application/x-java-applet;version=1.2|||$ 8|application/x-java-bean;version=1.2|||$ 9|application/x-java-applet;version=1.1.3|||$ 10|application/x-java-bean;version=1.1.3|||$ 11|application/x-java-applet;version=1.1.2|||$ 12|application/x-java-bean;version=1.1.2|||$ 13|application/x-java-applet;version=1.3|||$ 14|application/x-java-bean;version=1.3|||$ 15|application/x-java-applet;version=1.2.2|||$ 16|application/x-java-bean;version=1.2.2|||$ 17|application/x-java-applet;version=1.2.1|||$ 18|application/x-java-bean;version=1.2.1|||$ 19|application/x-java-applet;version=1.3.1|||$ 20|application/x-java-bean;version=1.3.1|||$ 21|application/x-java-applet;version=1.4|||$ 22|application/x-java-bean;version=1.4|||$ 23|application/x-java-applet;version=1.4.1|||$ 24|application/x-java-bean;version=1.4.1|||$ 25|application/x-java-applet;version=1.4.2|||$ 26|application/x-java-bean;version=1.4.2|||$ 27|application/x-java-applet;version=1.5|||$ 28|application/x-java-bean;version=1.5|||$ 29|application/x-java-applet;version=1.6|||$ 30|application/x-java-bean;version=1.6|||$ 31|application/x-java-applet;version=1.7|||$ 32|application/x-java-bean;version=1.7|||$ 33|application/x-java-applet;jpi-version=1.7.0_07|||$ 34|application/x-java-bean;jpi-version=1.7.0_07|||$ 35|application/x-java-applet;deploy=10.7.2|||$ 36|application/x-java-applet;javafx=2.2.1|||$ 37|application/x-java-vm-npruntime|||$ npdeployJava1.dll|$ C:\Windows\SysWOW64\npdeployJava1.dll|$ 10.7.2.11|$ 1347843071315|0|0|$ NPRuntime Script Plug-in Library for Java(TM) Deploy|$ Java Deployment Toolkit 7.0.70.11|$ 1 0|application/java-deployment-toolkit|||

Thank you