Firefox Enhanced Tracking Protection Site Breakage — What It Means & How to Fix It

Fix Firefox Enhanced Tracking Protection (ETP) breaking website functionality by blocking necessary scripts, cookies, or trackers. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Firefox's Enhanced Tracking Protection (ETP) blocks known trackers, third-party cookies, cryptominers, and fingerprinters. ETP can break website features that legitimately depend on third-party resources classified as trackers. The shield icon in the address bar shows when ETP is active and what it has blocked. ETP has three levels: Standard, Strict, and Custom, with Strict being most aggressive. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Strict mode blocking third-party cookies needed for authentication or checkout. Tracker blocking list including a domain that serves both tracking and functional content. Social media login buttons (Facebook, Google) blocked because their domains are on the tracker list. Embedded content from known tracking domains (YouTube embeds in some configurations) being blocked. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Click the shield icon in the address bar to see what ETP blocked on the current page. Toggle ETP off for the specific site by clicking the shield > 'Enhanced Tracking Protection is ON for this site' switch. Switch from Strict to Standard mode: Settings > Privacy & Security > Enhanced Tracking Protection > Standard. In Custom mode, selectively disable blocking categories that cause issues. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

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