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Ensure you're running the latest version of your browser. Updating your browser
Disabling add-ons one by one.
Chrome - More Tools then Extensions from the menu.
Firefox - Add-ons from the menu.
Safari - Preferences then Extensions from the menu.
4. Clear your cache.
Chrome - open up Settings from the menu then pick Clear browsing data.
Firefox, you want Preferences from the menu, then Privacy & Security and Clear Data.
Safari - open the Safari menu and pick Preferences, Privacy, and Manage Website Data.