ERR_BLOCKED_BY_CLIENT

ERR_BLOCKED_BY_CLIENT Error

Category: Browser Errors | Platforms: chrome windows macos

What This Error Means

The ERR_BLOCKED_BY_CLIENT error occurs when a resource (like a script or image) is blocked by an extension or setting in the user's browser.

Common Causes

  • Ad blockers (e.g., uBlock Origin, AdBlock Plus).
  • Privacy extensions (e.g., Ghostery, Privacy Badger).
  • Browser security settings blocking mixed content.
  • Content filtering software.

How to Fix It (For Users)

  1. 1 Disable your ad blocker for the site.
  2. 2 Check your browser extensions.
  3. 3 Allow the specific resource in your security settings.

For Site Owners / Developers

  1. Avoid using file names that trigger ad blockers (e.g., 'ads.js', 'banner.jpg').
  2. Serve all content over HTTPS to avoid mixed content blocking.
  3. Ask users to whitelist your site if necessary.

When It Is NOT Your Fault

If the user has installed aggressive blocking software.

Is the website actually down?

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