Mozilla Firefox Error Code PR_CONNECT_RESET_ERROR: How to Fix It

Easy 10-20 minutes Medium Severity Verified June 2026
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Error Code
PR_CONNECT_RESET_ERROR
Brand
Mozilla Firefox
Product Type
browser
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
10-20 minutes
The PR_CONNECT_RESET_ERROR in Mozilla Firefox occurs when the connection to a website is forcibly closed by the remote server or interrupted by network issues. This error typically indicates problems with your internet connection, firewall settings, or browser configuration that prevents Firefox from establishing a stable connection to websites.
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Tools You'll Need

How to Fix Error Code PR_CONNECT_RESET_ERROR

  1. Check Your Internet Connection

  2. Disable Firewall and Antivirus Temporarily

    Only disable security software temporarily for testing. Re-enable it immediately after testing to maintain system security.

  3. Clear Firefox Cache and Cookies

    Clearing cookies will log you out of all websites, so have your passwords ready.

  4. Reset Firefox Network Settings

    Be careful in about:config as changing wrong settings can affect browser performance. Only modify the specified settings.

  5. Disable Proxy Settings

  6. Update or Refresh Firefox

    Firefox Refresh will remove extensions and custom settings. Make note of important extensions to reinstall.

  7. Check DNS Settings

  8. Try Safe Mode

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When to Call a Professional

Contact your internet service provider if the error persists across all browsers and devices on your network. Seek IT support if you're on a corporate network with complex proxy or firewall configurations. Consider professional help if you're uncomfortable modifying network or DNS settings.

Frequently Asked Questions

What does PR_CONNECT_RESET_ERROR mean in Firefox?
PR_CONNECT_RESET_ERROR means the connection between Firefox and a website was forcibly closed or reset by the remote server, your network, or security software blocking the connection.
Why do I get PR_CONNECT_RESET_ERROR on some websites but not others?
Different websites use different servers and security protocols. Some sites may be blocked by your firewall or antivirus, while others work fine. The error can also occur if specific websites are having server issues.
Can VPN cause PR_CONNECT_RESET_ERROR in Firefox?
Yes, VPN connections can cause this error if the VPN server is unstable, blocked by the website, or configured incorrectly. Try disconnecting the VPN temporarily to test if it's the cause.
Will clearing Firefox data fix PR_CONNECT_RESET_ERROR?
Clearing cache and cookies often resolves the error if it's caused by corrupted stored data. However, if the issue is network-related or caused by security software, additional steps may be needed.
Is PR_CONNECT_RESET_ERROR dangerous or harmful?
No, this error is not harmful to your computer. It's simply Firefox's way of telling you it couldn't establish or maintain a connection to a website. It's a connectivity issue, not a security threat.

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