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Disable Dictionary Add-On and Tracking Protection
Both You must disable both the Dictionary Add-On and Tracking Protection will cause an error and interrupt testing, unless disabled. To disable the dictionary add-onfor testing:
Click the Open Menu at the top-right of the Firefox page
., and click Add Ons.
Expand title Click here to view a screenshot... - Click Click Add Ons > Extensions.
- Find Dictionary Extension, and click Disable.
- Refresh Firefox and resume the session.
To disable Tracking Protection:
Click the Open Menu at the top-right of the Firefox page, again, and click Preferences (Options for Windows).
Click Firefox > Preferences.Expand title Click here to view screenshots... - Click Privacy.
- Uncheck Request that sites not track you and Use Tracking Protection in Private Windows.
- Restart Firefox and resume the testing session.