Browser Settings for Firefox (PC and Mac)

Note: 3/5/12:

  • It appears that Firefox 11 is not “happy” with JRE (Java) versions below 1.6.0_31 or between 1.7.0 and 1.7.0_2 (per their message at  You may encounter blank screens or strange messages and cannot get to the Main Screen.
  • The solution is to update the java plug-in.  Go to and click the “Free Java Download” button to do this.  Mac users receive Java updates directly from Apple so use their normal software update process.  Apple did release a Java update for OS 10.6 and 10.7.
  • You may also need to re-allow pop-ups for ChemTracker if there is trouble accessing some functionality.

Below are the steps needed to prepare your Firefox (PC and Mac) to work with ChemTracker.
Note: your browser may already have some of these settings selected, but you should check to be certain.

  1. Disable Caching

    If PC – select Options in the Tools menu. If Mac- select Preferences in the Firefox Menu.
    Open the Advanced panel and click the Network tab. Enter a zero in the “Use up to” field to specify the size of the cache.

  2. Allow Cookies from CT

    Now select the Privacy tab. In the History section, choose ‘Use custom settings for history’ in the drop-down menu instead of ‘remember history.’
    Use Custom Settings
    Then click the Exceptions button for “Accept cookies from sites,” which is unchecked.

    Enter each of the following ChemTracker sites (we recommend you copy-and-paste to avoid typos) and press the Allow button:


    Close the window.

  3. Enable Java and JavaScript

    Now select the Content tab, and check the check-boxes entitled “Enable Java” (if your version has this line) and “Enable JavaScript.”

  4. Allow CT Pop-ups

    ChemTracker uses “pop up” windows to display certain types of information. All pop-up blockers must be turned off or otherwise disabled (i.e., allow pop-ups). Otherwise you may not be able to see the results of a query and other information, and ChemTracker will not work properly. If you are using a third-party application to block pop-ups, check with your local IT support for assistance to configure it to allow pop-ups from the three CT sites.At the Contents tab, press the Exceptions button for the checked “Block pop-up windows.”
    Firefox Settings Turn off pop-up blocker
    Enter each of the following ChemTracker sites (we recommend you copy-and-paste to avoid typos), and press the Allow button:


    Firefox  Settings Allow CT pop-ups
    Close the window.
    Or consult with your local IT support if you have the “Block pop-up windows” box unchecked and want to continue to keep the pop-up blocker off completely.
    Firefox  Settings Allow CT pop-ups
    Press OK.

  5. Restart computer

    At this point your computer should be properly set up to run ChemTracker. Once you have confirmed or added the above settings, re-boot your computer, access and log in to your organization’s ChemTracker instance. If you have any difficulty with access or log-in, email ChemTracker Support at