IE 11无法找到运行Applet的Java插件

Question

I have application build with Java Applets, which works fine for Windows 7 with IE 9. Now I'm trying move it to another environment. There is Internet Explorer 11 .

To run applet I'm using Oracle Deployment Toolkit Script with latest version taken from https://www.java.com/js/deployJava.txt . But the script doesn't detect Java Plugin . It only redirects to page java.com (suggesting to download latest JRE ).

But my browser has Java Plugin installed (here JRE 1.7.80):

There are also two SSV Helpers - maybe they cause the problem?

Java 8 (u144) cause the same problem.

Question:

How to detect Java Plugin in IE 11 and run applet?

Is it problem with deployJava.js or IE 11 configuration?

More explanations:

Oracle deployJava.js script uses such code to detect JRE version in IE ( deployJava source - lines 1172-1188 ):

testUsingActiveX: function(version) {
    var objectName = 'JavaWebStart.isInstalled.' + version + '.0';

    // we need the typeof check here for this to run on FF/Chrome
    // the check needs to be in place here - cannot even pass ActiveXObject
    // as arg to another function
    if (typeof ActiveXObject == 'undefined' || !ActiveXObject) {
        log('[testUsingActiveX()] Browser claims to be IE, but no ActiveXObject object?');
        return false;
    }

    try {
        return (new ActiveXObject(objectName) != null);
    } catch (exception) {
        return false;
    }
},

Unfortunately, ActiveX seems to be limited, restricted or disabled in IE 11. This topic on SO is here ... anyone knows any details?

I run manually (in IE 11.1480 developer console) this code:

new ActiveXObject('JavaWebStart.isInstalled.1.8.0.0');

which returns:

Automation server can't create object

But running the same code in a bit older IE 11.09600 returns object:

[object] { }

I'm confused... Can Oracle do the script better?

Specification:

Internet Explorer 11, Version: 11.1480... Update Versions: 11.0.44

System: Windows Server

Java: tested with 1.8.144 and after 1.7.80

Applets run by Oracle deployJava.js

Answer 1

I've found a solution:

Applets requires 32-bit JRE installed on client machine (and as IE Plugin). Or to be more specific IE ActiveX mechanism works only with 32-bit Java because all IE are 32-bit by default. There are also 64-bit IE version, but I don't try it.

I used the newest JRE 1.8u144 32 bit .

Some hints for anyone to make applets work (even in 2017):

1. Check Internet Explorer version (32- or 64-bit) - look at Help -> About Internet Explorer , if there is no 64-bit info, then you probably use 32-bit. Check also Windows Task Manager and search for *32 processes. More info in other SO questions like this .
2. Disable ActiveX Filtering may also help. But in my situation, this wasn't necessary because IE displays message which warn about running Java plugin and I just need to accept this.
3. I have disabled option: Enable Protected Mode on Security tab in Internet Options window (for Internet zone ).

More information can be retrieved from this discussion:

https://answers.microsoft.com/en-us/ie/forum/ie11-iewindows_10/cannot-access-secure-website-that-requires-java/173f732b-7377-41f6-8c6f-2ae171f4da7a?auth=1

Answer 2

Above answer was useful. But we did an update to jre1.8.0_144. I reinstalled 32 bit JDK in my system which integrated a java plug-in 11.144.2 automatically as add on in my Internet explorer 11. Also I could see the architecture of the plugin as 32 bit and 64 bit.

Its good to download a 32 bit jre which will automatically configure the necessary add on. This fix made IE to run applets.