The issue you're experiencing with Firefox displaying "Unable to connect" to `0.0.0.4` on startup is likely related to a misconfiguration in your Firefox settings or a problem with your network settings. Here are some steps you can take to troubleshoot and resolve the issue: ### 1. Check Your Home Page Settings The error message indicates that Firefox is trying to connect to `0.0.0.4`, which is not a valid address. This could be due to a misconfigured home page setting. - Open Firefox. - Click on the menu button (three horizontal lines) in the upper right corner. - Select **"Settings"** (or **"Options"**). - In the left sidebar, click on **"Home."** - Check the **"Homepage and new windows"** setting. If it is set to `0.0.0.4`, change it to a valid URL (e.g., `https://www.google.com` or `about:home`). ### 2. Check Your Network Settings Sometimes, network settings can cause issues with how Firefox connects to the internet. - Click on the menu button and select **"Settings."** - In the left sidebar, click on **"General."** - Scroll down to the **"Network Settings"** section and click on the **"Settings..."** button. - Ensure that **"No proxy"** is selected, or if you use a proxy, make sure the settings are correct. - Click **OK** to save any changes. ### 3. Clear Cache and Cookies Clearing your cache and cookies can sometimes resolve connection issues. - Click on the menu button and select **"Settings."** - In the left sidebar, click on **"Privacy & Security."** - Scroll down to the **"Cookies and Site Data"** section and click on **"Clear Data..."** - Select both options and click **"Clear."** ### 4. Disable Add-ons and Extensions Sometimes, add-ons or extensions can interfere with Firefox's functionality. - Click on the menu button and select **"Add-ons and Themes."** - Go to the **"Extensions"** tab and disable all extensions. - Restart Firefox and see if the issue persists. ### 5. Check for Malware Malware can sometimes cause unusual behavior in browsers. Run a full system scan using your antivirus software to check for any malware. ### 6. Reset Firefox If the issue persists, you can reset Firefox to its default settings. - Click on the menu button and select **"Help."** - Choose **"More Troubleshooting Information."** - Click on the **"Refresh Firefox"** button. This will reset Firefox to its default state while saving your bookmarks and passwords. ### 7. Check Firewall/Antivirus Settings Ensure that your firewall or antivirus software is not blocking Firefox. - Check your firewall settings to ensure that Firefox is allowed to access the internet. - If you have third-party antivirus software, check its settings as well. ### 8. Reinstall Firefox If none of the above steps work, you can try uninstalling Firefox completely, including user data, and then reinstalling it. - Uninstall Firefox from your computer. - Go to the Firefox profile folder (usually located in `C:\Users\<YourUsername>\AppData\Roaming\Mozilla\Firefox\Profiles\` on Windows) and delete the profile folder. - Reinstall Firefox from the [official website](https://www.mozilla.org/en-US/firefox/new/). By following these steps, you should be able to resolve the issue with Firefox displaying the "Unable to connect" message. If the problem persists, please let me know, and we can explore further troubleshooting options.