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Academic Technology Center


Unblock Java for use with FireFox and Safari

When using SacCT features that rely on the Java plug-in, some Mac OS users may be encountering that the plug-in is "blocked" or "inactive." This is due to a security update which had disabled older versions of Java.

Fortunately a Java update is available for Mac OS 10.7 (Lion) and 10.8 (Mountain Lion). The supported web browsers for this update are FireFox and Safari.

NOTE: For Mac OS 10.6 (Snow Leopard), an update is available through Apple's normal "Software Update" which can be found by clicking the Apple logo in the top-left of the screen. The following instructions do not apply for Mac OS 10.6.

If you use SacCT features such as Collaborate, Chat, or Multiple-File upload, it is recommended to install and enable latest version of Java by following the instructions below.

  1. Download Java 7.13
    Visit our Plug-ins page and click the link for "Java Download" under the Plug-Ins section.

  2. Install Java
    Find and double click the file you had just downloaded. Then follow the on-screen instructions.

  3. When using a Java related SacCT feature
    Once you login to SacCT and need to use a feature that uses Java, you may receive 2 pop-ups.

    1. "Do you want to run this application?"
      Click "Run"

    2. "Java has discovered application components ...
      block potentially unsafe components... "

      Click "No"

By following the above instructions, you will have allowed Java for use with SacCT. In case you reencounter the aforementioned pop-ups, please just click "Run" then "No."

Deleting Browser and Java Cache

If you are having difficulty viewing content in your SacCT course(s), you may need to clear (delete) the temporary files from your browsers and the computer's Java cache.

How to clear a Web browser's temporary files

Visit this website to delete the temporary files (cache) from your browsers.

How to clear the Java cache

Follow the steps at this webpage to delete the temporary files in your computer's Java cache.

Issue for Mac users running the latest Java update (1.6.0_31)

There is an issue with Respondus LockDown Browser for Mac users running the latest Java update (1.6.0_31). The problem occurs during the startup of the Mac version of LockDown Browser or when submitting a test, which can cause the software to stop working and freeze your computer. Respondus has resolved the issue and does not expect future versions of Java to cause similar issues. To get the fix from Respondus, you must download and install the full version of LockDown Browser (version from the installation page. The update process within LockDown Browser does not contain the latest fix, so use the link above to get the full version.

Viewing PDF Files on the Mac OS

The following errors may occur when users attempt to view a PDF file on SacCT using Firefox or Safari on the Macintosh operating system:

  1. A blank screen displays.
  2. A screen displaying a message that a plug-in is missing.

To view the PDF, download & install the Schubert|it PDF Browser Plugin:

  1. Using your browser, navigate to the Schubert|it PDF Browser Plugin page.
  2. Download & install the plugin on your computer.
  3. Restart your browser.
  4. Log into SacCT & access your course.
  5. Navigate to the PDF you would like to access.
  6. Upon accessing the PDF for the first time, after having installed the Schubert|it PDF Browser Plugin, you will be promted to enter a license. Select the option labeled Educational use only (see screenshot below):

    License information for the Schubert|it PDF Browser Plugin - select "Educational use only"

  7. Click OK.

PDFs will now view in your MacOS browser using the Schubert|it PDF Browser Plugin:

The Schubert|it PDF Browser Plugin, in SacCT 9.1

Last updated: February 6, 2017