Fix: getting ERR_QUIC_PROTOCOL_ERROR sometimes for some images and ajax requests

 The "ERR_QUIC_PROTOCOL_ERROR" is a common error in Google Chrome and other Chromium-based browsers, and it's related to the QUIC (Quick UDP Internet Connections) protocol. This error occurs when there's a problem with the QUIC protocol, and it can impact the loading of web pages, including images and Ajax requests. Here are some steps you can take to troubleshoot and potentially resolve this issue:


1. **Disable QUIC Protocol**:


   You can try disabling the QUIC protocol to see if it resolves the issue. To do this:


   a. Open Google Chrome.


   b. In the address bar, type `chrome://flags`.


   c. Search for "Experimental QUIC protocol."


   d. Disable it and relaunch the browser.


2. **Clear Browser Cache and Cookies**:


   Sometimes, cached data or cookies can cause protocol errors. Try clearing your browser's cache and cookies to see if that helps.


3. **Update Browser**:


   Ensure that your browser is up to date. Outdated versions of the browser may have bugs or issues that have been fixed in newer releases.


4. **Disable Extensions**:


   Browser extensions can sometimes interfere with the loading of pages. Try disabling extensions one by one to identify if any particular extension is causing the error.


5. **Network Issues**:


   Network issues can also trigger this error. Check your network connection, and if you are on a corporate or public network, it's possible that the network itself is causing the problem. Try accessing the site from a different network to see if the issue persists.


6. **Firewall and Antivirus**:


   Some firewall or antivirus software might interfere with QUIC connections. Temporarily disable such software to check if it's the cause.


7. **Try a Different Browser**:


   Test if the issue occurs in a different web browser. If it doesn't, the problem might be specific to your current browser.


8. **Website Specific Issue**:


   The error might be specific to the website you're trying to access. If it's happening only on certain websites, it's possible that the issue is on the server side, and there may be little you can do from your end.


9. **HTTPS vs. HTTP**:


   If the issue is occurring on HTTP sites, try accessing the secure (HTTPS) version of the site if available. Some browsers are moving away from QUIC for non-secure connections.


10. **Check Server Status**:


    Sometimes, the error could be on the server side. Check if the website or service you're trying to access is experiencing downtime or issues.


11. **Contact Your ISP**:


    If you suspect the issue is related to your internet service provider (ISP), contact them for assistance.


12. **Browser Dev Tools**:


    Use your browser's developer tools to check the network tab for details on which specific requests are failing. This can provide more insight into the problem.


13. **Check for Updates**:


    Ensure that your operating system, especially if it's Windows, is up to date, as some updates may address networking issues.


If you continue to experience the "ERR_QUIC_PROTOCOL_ERROR," it's possible that the issue might be outside of your control, such as server-related problems or network issues. In such cases, you may need to wait for the service provider to address the problem.

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