If you want to delete an extension entirely, click ' Remove.'.Find the add-on you want to disable and click its ' Disable' button.Click ' Extensions' to view the installed extensions that add features to Firefox, or click ' Plugins' to view plugins that add compatibility and functionality.If you are using Windows XP, click on ' Tools' from the menu bar near the top of the browser window and choose ' Add-ons.'.Click the orange ' Firefox' button in the top left-hand corner of the browser window and choose ' Add-ons' from the right column of the menu to open an Add-ons Manager tab in the active browser window.Follow the steps in this help article: Why Do I See 'Error on Page' in Internet Explorer?.Here are steps for various browsers: Microsoft Internet Explorer 11 and Later:

To see if this is the case you can try disabling all plugins, add-ons, or extensions within your browser.

If you are encountering speed, upload, download, or various interface problem with Box it could be caused by a plugin, add-on, or extension that you have installed in your browser. Can browser plugins and extensions affect my connection to Box?

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