Can you give more details about what add-on blocker feature you want to disable? Is this about an installed extension or does Firefox block some content? Is this only happening on some specific websites? Can you attach a screenshot? *http://en.wikipedia.org/wiki/Screenshot *https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem *Use a compressed image type like PNG or JPG to save the screenshot *Make sure that you do not exceed the maximum size of 1 MB