Resolve Slowness on St. Lawrence websites in Firefox


There is a known issue in Mozilla Firefox with St. Lawrence websites loading slowly on the campus network. This issue is related to the way Firefox enables DNS compared to other web browsers. This article explains how to turn off this feature in Firefox. 

Who Is Affected?

Anyone who is browsing St. Lawrence websites in Firefox while on campus may encounter this issue.


  1. In Firefox, click the Menu button on the top right corner of the window (the button that looks like 3 lines stacked on top of each other).
  2. Click Settings.
  3. Scroll down to the "Network Settings" section of the page, then click Settings....
  4. In the box that appears, scroll down until you see Enable DNS over HTTPS.
  5. Uncheck the check box next to "Enable DNS over HTTPS".
  6. Click OK.

Once this is completed, you can close Firefox and reopen it, and you should notice a performance improvement while browsing St. Lawrence websites.

Additional Information

For more information please reference this support article from Mozilla:   

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Article ID: 119809
Thu 11/5/20 3:28 PM
Tue 11/23/21 10:37 AM