Troubleshooting Java

Troubleshooting Java Overview

The Image Editor in OU Campus v9 requires that the latest version of Java be installed and enabled on a user's local computer. Additionally, there may be several settings that can be modified. These are security-related settings for the Java Verification tool online, within the Java Control Panel, and for Internet Explorer, and pertain to both PC and Mac/OS users.

ActiveX Filtering

In order to use the Java version verification online it may be necessary to disable ActiveX Filtering in Internet Explorer. ActiveX Filtering can be disabled from Internet Explorer with the following steps:

1. Click the Settings icon > Internet Options > Security Tab.

2. Select the Custom Level button.

3. Under ActiveX controls and plug-ins > Allow ActiveX Filtering, select the Disable option.

Trustes Sites Zone

Java Verification Tool Online

The verification tool is available at the site:

If there is an error with the verifier tool; for example, the users see the text: "Verifying Installation -- Detecting Java on your computer," but the verification process never completes, disabling the ActiveX Filtering as described above may resolve the this issue. The screenshot below illustrates an example of this issue.

 Java Verification

If the verifier tool does not run, it can also indicate that the version of Java is out of date or that several other security settings are preventing the tool to run. Depending upon the browser version there may be a blue circle x icon or other refresh symbol in the URL bar that can be clicked to initiate the Java detection script. Or there may be a dialog that requests of the user to allow the detection script to run.

 Java Detection Script

Run the Java Detection script, which will determine if the local computer requires an update. If an update is required, download and install the latest version to ensure compatibility with the Image Editor. Follow the onscreen instructions and restart the browser when completed. Certain changes in security settings described below may also require a restart of the computer.

There are several security-related settings that can prevent Java from running within a browser. Here's a link to a troubleshooting page for installing Java.

Specifically, for Internet Explorer modifications can be made to the following settings:

  • Adding OmniUpdate as a trusted site
  • Changing the Security level to Medium
  • Disabling Protected Mode
  • Disabling Enhanced Protected Mode

Adding OmniUpdate as a Trusted Site

OmniUpdate should not be added as a trusted site to Internet Explorer 11 in order to utilize Emulation mode.

Changing the Security level to Medium

To change the security settings on the Internet Explorer browser to medium:

1. Click the Settings (top right) icon > Internet Options > Security tab.

2. Under the Security level for this zone section, change the level to Medium.

3. Click Apply.

IE Security Level 

Disabling Protected Mode

The checkbox for disabling Protected Mode is on the same screen:

1. Click the Settings (top right) icon > Internet Options > Security tab.

2. Clear the Enable Protected Mode checkbox.

3. Click Apply.

The previous screenshot shows the checkbox.

Disabling Enhanced Protected Mode

The setting for the Enhanced Protected Mode is also available from the Internet Options.

1. Click the Settings (top right) icon > Internet Options > Advanced tab.

2. Clear the checkbox for Enable Enhanced Protected Mode.

The computer needs to be restarted for the change to take affect.

Enhanced Protection Mode 

Java Control Panel

The Java Control Panel can be accessed on a PC from the Control Panel > Programs > Java. Two items may affect the ability of the Image Editor to run with Internet Explorer:

  • The security level setting should be to Medium. The user may still be presented with a warning, but can choose to ignore the warning and Java applications will still be run.
  • Adding as a trusted site with the Sites button. This may not be available for all versions of the Java Control Panel.

JCP Medium 

Other Things to Check For

Previous Versions of Java

Also from the Java Control Panel, check that previous versions of Java have been removed as this can interfere with the operation of Java and the Image Editor. This is available from the Java tab > View. If previous versions are listed, they can be removed here.

Previous versions of Java

Clear the Java Cache

Similar to a browser, there is also a cache of temporarily stored Java applications that may need to be cleared. This is available from the Java Control Panel > General Tab > Delete Files.

Clear cache












Was this page helpful?

Additional Comments:

(Include your email address if you would like a reply)