Software⏱️ 4 min read📅 2026-06-15

How to Fix: Restart browser on error

How to fix browser errors on web-based signage applications with intermittent network dropouts.

Quick Answer: Use JavaScript to handle errors and redirect to the live sign, or implement a browser restart feature.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. ✅ Best Solutions to Fix It
  3. 💡 Conclusion

The error 'DNS error' or 'Page not found' occurs when the browser is unable to connect to the internet or access a specific webpage. This issue affects users of web-based applications, including signage systems that rely on internet connectivity.

This error can be frustrating for users, especially in environments with intermittent network dropouts. To address this issue, we will explore two primary fix methods: restarting the browser automatically and customizing displayed error messages using JavaScript.

🔍 Why This Happens

  • The first main reason why this error happens is due to a loss of internet connectivity or a DNS resolution failure. When the browser cannot establish a connection with the server hosting the webpage, it displays an error message indicating a 'DNS error' or 'Page not found.' This can occur due to various reasons such as network congestion, poor internet quality, or incorrect DNS settings.
  • An alternative reason for this error is a misconfigured browser setting or a corrupted browser cache. In some cases, the browser's cache and cookies may become outdated or corrupted, leading to connectivity issues and display errors.

✅ Best Solutions to Fix It

Automatic Browser Restart

  1. Step 1: To implement automatic browser restart, you will need to use a third-party script that can detect network drops or DNS errors. One popular solution is to use a script like 'AutoRestart' which can be integrated into your signage application's code.
  2. Step 2: The script should be configured to trigger an automatic browser restart when it detects a DNS error or network drop. This will ensure that the browser is restarted, and the user is redirected to the live sign again.
  3. Step 3: To implement this solution, you will need to modify the HTML and JavaScript code of your signage application to include the AutoRestart script. You may also need to configure the script to work with your specific environment and network settings.

Customized Error Messages using JavaScript

  1. Step 1: To implement customized error messages, you will need to use JavaScript to detect DNS errors or network drops. You can achieve this by adding event listeners to the browser's window object and checking for specific events such as 'dnserror' or 'networkerror'.
  2. Step 2: When an error occurs, you can display a custom error message using HTML and CSS. The error message should redirect the user to the live sign again. To do this, you will need to add a link or button to the error message that points to the live sign's URL.

💡 Conclusion

To summarize, there are two primary fix methods for addressing the 'Restart browser on error' issue: automatic browser restart and customized error messages using JavaScript. By implementing one of these solutions, you can ensure that your web-based signage application remains functional even in environments with intermittent network dropouts.

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