Why Is Firefox Preventing Pages From Redirecting?
Firefox has a variety of different features through which you can customize your general Internet browsing. One of these options is to prevent redirects that occur automatically, either by the way of a script or via the meta tags. If you get the message that Firefox has prevented a redirect, its because someone has gone into the Preferences and selected the option that defines this behavior. You can change it if need be.
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Accessibility
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The setting that stops automatic redirecting is actually an accessibility setting, not a security measure. This is because the use of automatic redirects is hard on visually impaired users with screen readers or users who don't have much experience with the Internet. Associations connected with accessibility generally recommend against the use of automatic page redirects, but the middle ground is that modern browsers offer an option that prevents these automatic redirects when necessary.
Changing the Setting
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The option to allow redirects is on the Preferences menu under the "Advanced" option. On the Advanced page of the menu, select "General." You'll see three options under the Accessibility header. The third one, "Warn me when websites try to redirect or reload the page," is what makes Firefox stop a page redirect. Deselect it and press the "Close" button to leave the Preferences window.
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Reasons for Automatic Redirects
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The most common reason that people set up automatic redirects is to move visitors from an old URL to a new one. By setting up an automatic redirects, users can get to the new location without having to deal with clicking any links or reading any information on the old page. Certain kinds of redirects also help prevent link rot, where links to an old page lead to a dead end. Instead, the old links redirect to the new location.
Security
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The act of automatically redirecting a page is not in itself an immediate cause for concern, but that doesn't mean you shouldn't be careful. If you're automatically redirected to a page, make sure that it is the page you wanted to visit. Do not enter any login credentials or personal information on the site without knowing for sure that the website is legitimate. Check for the "https" protocol in the URL and a valid Secure Sockets Layer certificate; this information is usually available via a green lock icon to the left of your URL in the location bar.
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