YouTube Error Code 15 Fix | This request was blocked by the security rules

YouTube Error Code 15 typically refers to a network or access-related issue — often tied to firewalls, DNS, or browser configuration.

This error isn’t officially documented by YouTube, but users often report it as:

“Error Code 15: This request was blocked by the security rules.”

It’s usually triggered by network-level security systems, like a corporate firewall or certain browser security extensions.

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✅ How to Fix YouTube Error Code 15

1. Refresh or Restart Everything First

• Refresh the YouTube page (F5).

• Restart your browser.

• Restart your device.

• Try another browser (Chrome, Firefox, Edge).

2. Check Your Internet Connection

• Switch from Wi-Fi to mobile data (or vice versa).

• Restart your router.

• If you’re on a school/work/corporate network, the error might be due to firewall restrictions.

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3. Disable VPN, Proxy, or Custom DNS

• Turn off VPN or Proxy: Some servers may block YouTube traffic via certain IPs.

• Revert to default DNS:

  • Go to your network settings and remove any custom DNS (like AdGuard, NextDNS).

  • Use Google DNS instead:

    • 8.8.8.8 and 8.8.4.4

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4. Disable Browser Extensions

Especially security, privacy, or ad-blocking extensions (like uBlock, NoScript, Privacy Badger):

• Go to your browser extensions.

• Temporarily disable them all.

• Refresh YouTube — if it works, re-enable one-by-one to find the culprit.

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5. Clear Browser Cache and Cookies

• Open browser settings → Privacy/Security → Clear browsing data.

• Clear:

  • Cookies

  • Cached images/files

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6. Try Incognito Mode

• Open YouTube in a private/incognito window to bypass cached data or cookies that may be interfering.

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7. Check Firewall or Security Software

• If you’re using corporate antivirus or firewall software (like Norton, Kaspersky, ESET), temporarily disable web protection and test again.

• Some firewalls block traffic based on security rules, which can trigger error 15.

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🧪 Quick Test:

• Visit YouTube via https://youtube.com on your for or from another network.

  • If it works, the problem is likely your network or DNS/VPN settings.