How do I fix a SecurityError in my course?

Created by Tony V, Modified on Fri, 19 Jun at 7:10 AM by Rob I

In order for our LMS to capture your responses to the courses, you can not have third-party cookies blocked. This disables our ability to track your selections.


If you are seeing an error on our LMS that says "SecurityError: Failed to read the "localStorage" property from "Window": Access is denied for this document." please follow the steps below:


Disabling “Block Third-Party Cookie" on the Browser (Chrome) 



  1. On your computer, open Chrome.
  2. At the top right, click More (⋮)Settings.
  3. Under “Privacy and security,” click Site settings.
  4. Click Third-party cookies.
  5. Select the option: Allow third-party cookies.
  6. Close Chrome and reopen the browser.

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