Error code 520: How to fix it?

Error code 520 : How to fix it?

Error Code 520 is a server-side error caused by an issue with the connection between the web server and the origin server. To avoid this error, try refreshing the page, clearing your browser cache and cookies, contacting your hosting provider or website administrator, and checking your server’s logs for any issues.

In today’s digital age, getting error notifications when browsing the web is common. In this article, we will look into error code 520 in-depth, explain its causes, and provide solutions to help you get back on track. Whether

What Is Error Code 520?

Error code 520 is a standard HTTP status code that indicates a problem with the operation of a web server. It happens when a server fails to respond to a valid request from a client browser promptly and could be due to server overload, network issues, or incorrect configuration.

Error 520 does not specify a specific issue but is a generic warning of server unavailability or slowdown. When encountered, it prevents the user from accessing the requested content.

Server administrators must typically check server logs and identify potential issues affecting server performance while troubleshooting and fixing the root cause.

Causes of Error Code 520

Now. let’s look at the major causes behind this issue, enabling us to look for solutions afterward. 

1. Server Overload

Server overload might cause error code 520. When a web server receives many requests, it can become overburdened, resulting in a timeout or inability to respond.

Server Overload occurs frequently during moments of high traffic, when more users attempt to reach the server than it can handle. Website managers must optimize their server’s performance, invest in scalable infrastructure, and apply load-balancing strategies to handle this issue. 

Users who receive this error due to server overload should wait a little before retrying, as the service may have recovered by then. Additionally, website owners should check the performance of their servers to avoid recurring overloads.

2. Network Issues

This error may happen if your internet connection fails or the website’s server suffers network issues. Slow or interrupted connectivity might impair communication between your browser and the server, resulting in the annoying error code 520.

To address this, make sure your internet connection is stable by checking your Wi-Fi or Ethernet connection and, if necessary, restarting your router.If the error persists, contact your Internet Service Provider (ISP) for assistance in fixing network-related issues, resulting in more enjoyable web browsing.

3. Firewall or Security Settings

Error Code 520 can stem from firewall or security settings on the web server. These stringent configurations might mistakenly block incoming user requests, leading to errors. To address this issue, web administrators should review and adjust their firewall rules and security settings to ensure they don’t inadvertently hinder legitimate user access.

It’s a delicate balancing act between security and accessibility, but finding the proper equilibrium can help prevent Error 520 and ensure a smoother browsing experience.

4. DNS Issues

DNS issues may be a contributing factor to Error Code 520. When your DNS (Domain Name System) settings are incorrect or outdated, your browser may have trouble locating the correct IP address for the website you’re attempting to access.

The discrepancy between your browser and the DNS server can cause the server to fail to respond, resulting in the Error 520 message.

5. Web Hosting Problems

Web hosting problems are a common culprit behind Error Code 520. These issues can stem from server misconfigurations, server overload, or downtime. When your web host encounters such problems, your website may become temporarily unreachable, triggering the frustrating Error 520.

If you own a website, it’s crucial to monitor your hosting service for these issues and promptly address them to ensure a smooth online experience for your visitors.

How to Fix Error Code 520?

How to Fix 520 error

Now that we have examined the probable reasons, we shall explore potential solutions to fix this issue. 

1. Refresh the Page

Refreshing the page is a quick and easy technique to resolve Error Code 520. This error is frequently caused by temporary server or network difficulties. When you reload the page, your browser sends a new request to the server, which might occasionally cure the problem.

To reload the page, press F5 on your keyboard or click the refresh icon (typically a circular arrow) in your browser. The reloaded page may load successfully if the error was only temporary or caused by a malfunction. 

2. Check Your Internet Connection

Start by checking your internet connection to resolve Error Code 520. A stable and dependable internet connection is essential for good web browsing. Check that your Wi-Fi or  Ethernet connection  is active and not being disrupted. You can also try to view other websites to see if your connection is the source of the problem. If other websites load without problems, the issue may be with the website you’re attempting to access. 

If you experience problems with several websites, consider troubleshooting your internet connection, such as resetting your router or calling your internet service provider.

3. Try a Different Browser

If you experience Error Code 520 while browsing a website, using a different web browser is easy. The error may be browser-specific owing to cached data issues or momentary glitches. Using a different browser, such as Chrome, Firefox, Edge, or Safari, lets you discover if the problem is with your primary browser. If the website loads correctly in the new browser,

it’s a good sign that the problem isn’t with the website server but with your original browser. Clearing its cache and cookies may assist in resolving the issue and getting you back online quickly.

4. Clear Browser Cache and Cookies

Error Code 520 is frequently resolved by clearing your browser’s cache and cookies. These cached files, meant to speed up browsing, might become obsolete or corrupted over time, causing problems while loading webpages. Deleting them ensures that your browser retrieves new data, potentially removing the problem. 

To do so, go to your browser’s settings and look for the option to delete browsing data. Then, choose “cache” and “cookies” and confirm the deletion. Refresh the problematic webpage after that. This simple procedure can frequently get you back on track, allowing you to enjoy a smoother surfing experience without the annoying Error 520.

5. Wait and Retry

When confronted with Error Code 520, a simple yet effective remedy is to be patient and repeat accessing the webpage after a brief delay. This error is frequently caused by temporary server challenges such as overloads or short network outages. You allow the server to recover and answer correctly by waiting a short time and attempting again.

It’s a quick and easy technique to tackle the problem without getting bogged down in complicated troubleshooting. Waiting a little allows you to view the target website without further problems.

6. Contact the Website Administrator

If you keep getting Error Code 520 on a specific website, the best thing to do is contact the website administrator. They have the necessary technical knowledge and access to server settings to diagnose and resolve the problem. Contact information, such as an email address or a contact form, is frequently available on the website.

Describe the issue politely, including any particular error messages or actions that caused it and information about your browser and device. Direct connection with the website administrator is frequently the quickest option to ensure an effortless browsing experience.

7. Check DNS Settings

Checking DNS settings is vital for resolving Error Code 520. DNS, or Domain Name System, is important in routing your browser to the proper web server. If your DNS settings are misconfigured or compromised, your browser may have difficulty finding the correct path, resulting in this error. To resolve this, consider using reliable public DNS servers such as Google’s ( and or your Internet Service Provider’s DNS servers.

This straightforward procedure can frequently correct the issue and ensure smooth browsing.

8. Review Hosting Service

When dealing with Error Code 520, it is imperative to review your hosting service. This error frequently implies server-side issues; your hosting provider is crucial in resolving them. First, determine whether your hosting plan can handle the website’s traffic.

Overloads and mistakes can occur when resources are insufficient. Next, confirm that your hosting provider’s server configurations are optimized for your website’s demands because frequent server misconfigurations can cause the error. 

Finally, evaluate their customer service responsiveness. A hosting company with dependable support may quickly identify and resolve server-related issues, reducing the likelihood of experiencing this error. A reliable hosting provider is essential for a pleasant online experience.

Advanced Troubleshooting Tips

In a scenario where the solutions mentioned earlier do not work, here are some advanced and quick troubleshooting tips you can employ to solve the issue. 

Advanced Troubleshooting Tips

Check Server Logs: Examine the logs to find any specific issues or patterns causing Error 520. Analyzing server logs can reveal helpful information about the root problem.

Review Server Resource Usage: Keep track of your server’s resource utilization, such as CPU, RAM, and disc space. High resource use can cause server overload and restrict the intended search results.

Examine Error Messages: Always pay close attention to error messages or codes displayed. These notifications can provide information about the underlying problem.

Server Firewall Configuration: Review the firewall settings on your server. Overly tight firewall rules can sometimes prevent genuine requests, resulting in Error 520. As needed, modify these rules.

Check Server Health: Use server monitoring tools to evaluate your server’s health. Look for evidence of hardware failures or software problems contributing to the error.

Optimise Server Software: Ensure that your server software, including the web server (e.g., Apache, Nginx) and database server, is up to date and properly configured.

Test Server Response Time: Determine the time it takes your server to respond to queries. Timeouts and Errors can occur as a result of slow response times. Identify and resolve performance issues on your server.

Traffic Analysis: Analyse incoming and outgoing network traffic using network monitoring technologies and can aid in identifying unusual traffic patterns or spikes that may be related to the issue.

Consider Content Delivery Networks (CDNs): Using a CDN, you may spread website content across numerous servers worldwide, lowering the demand on your origin server and avoiding Error 520 due to server overload.

Consult with Hosting Support: If you have any questions or encounter issues with these technical tasks, please contact your hosting provider’s support team for assistance.

Preventive Measures to Avoid Error Code 520

Measure error code 520

Here are some preventive measures that website owners and administrators can take to reduce the chances of experiencing Error Code 520: 

1. Choose a Reliable Hosting Provider

Choosing a reputable hosting provider is critical for avoiding Error Code 520. Providers having a demonstrated track record of good uptime and server performance should be prioritized.

To make an informed decision, read user evaluations, consult industry experts, and look at uptime statistics. A reliable hosting service establishes the groundwork for a solid and error-free online experience.

2. Optimize Server Resources

Assess your website’s needs and update your hosting plan to optimize server resources properly. Ensure you have enough CPU, RAM, and bandwidth to manage traffic variations. Reduce resource consumption by implementing server-side caching and efficient database queries.

Monitor resource use regularly and scale your hosting package as your website grows to ensure it can handle additional traffic without experiencing performance issues like Error Code 520.

3. Regularly Update Server Software

Regularly updating your server software is vital for maintaining security and performance. Outdated software might reveal weaknesses, leaving your server vulnerable to hacks and issues such as Error Code 520. To ensure a secure and stable hosting environment,

be proactive by deploying security patches and upgrades offered by your server’s operating system, web server software, and any other necessary components as soon as possible.

4. Implement Server Monitoring

Server monitoring entails monitoring server performance, resource utilization, and uptime via specialized tools or services.

When abnormalities or problems develop, monitoring systems can warn administrators immediately, allowing them to take corrective action before problems escalate.

Server monitoring contributes to server stability and a more pleasant browsing experience for website visitors.

5. Load Balancing

Load balancing divides incoming network traffic over different servers to maximize resource utilization, reduce server overloads, and improve website stability.

Load balancing guarantees that no single server becomes overburdened by evenly distributing requests, lowering the risk of encountering issues such as

Error Code 520. It’s a critical strategy for high-traffic websites and applications since it promotes consistent user experiences and solid performance.

6. Regular Backups

Regular backups are required to protect your website’s data and setups. Scheduled backups, commonly run daily or monthly, ensure that your site can be swiftly recovered during data loss or server issues.

Having current backups on hand provides peace of mind and reduces potential downtime, allowing you to restore your website to a functional state quickly. 

7. Implement Security Best Practices

Implement best practices such as strong password policies, two-factor authentication, and frequent security audits to improve website security. Strong passwords, in conjunction with additional authentication mechanisms, prevent unauthorized access.

Routine security audits detect weaknesses, allowing for fast updates and protecting your website from potential attackers.

8. Stay Informed

It is critical to be educated and learn to avoid Error Code 520. Follow industry news, security upgrades, and server-related advancements regularly.

Participate in online forums and communities to learn from the experiences of others and acquire insights on potential risks and solutions.

By remaining informed, you may address issues before they impair your website’s functionality, thereby improving its dependability and performance.

Tools and Resources to Diagnose Error Code 520

Here is a list of 10 tools and resources to help diagnose Error Code 520 and resolve server-related issues. 

  • Pingdom
  • UptimeRobot
  • Google PageSpeed Insights
  • WebPageTest
  • Server Logs
  • cURL
  • Browser Developer Tools
  • Website Performance Testing Tools like GTmetrix, YSlow, and
  • Online Tutorials and Documentation

Conclusion - Error Code 520

Error Code 520 may appear a technological nightmare, but it becomes less frightening with some knowledge. Understanding the causes of the problem, such as server overloads, network problems, or DNS misconfigurations, is essential.

Preventive actions such as selecting a reputable hosting provider, monitoring server performance, and applying security best practices can reduce the likelihood of getting Error 520.

Furthermore, various diagnostic tools, ranging from website monitoring services to server logs and developer tools, can assist in identifying and addressing issues. Preventive maintenance and knowledge are essential for a more satisfying internet experience. 

FAQs - Error Code 520
What is error code 520 on Chrome?

When attempting to view a website, Chrome error code 520 suggests a server connection problem. It is frequently a temporary issue caused by server overload or network issues. You can try refreshing the page, verifying your internet connection, or waiting for the website to return to normal.

What does the 520 status code mean?

Typically, while attempting to access a website, the 520 status code implies a server issue. It's a usual error frequently triggered by server overloads or network problems. You can fix it by refreshing the page, checking your internet connection, or waiting for the server to reply correctly.

How do I fix error code 520?

To resolve Error Code 520, reload the page, verify your internet connection, and wait a few seconds before retrying. If the problem persists, clear your browser cache and contact the website administrator. Ensure your server is configured correctly, and monitor server resources to avoid overloads, which significantly cause this problem. These steps can help you resolve Error Code 520 and enjoy uninterrupted browsing.

Why web server is returning an unknown error Cloudflare?

When a web server delivers an "unknown error" via Cloudflare, the server encounters a problem but does not disclose the potential reasons. Check your server logs for more information, make sure your server resources are sufficient, and evaluate your server settings to remedy this. Consider contacting your hosting provider or website administrator for assistance in diagnosing and resolving the underlying server issue.

What is error code 520 on an HP laptop?

An HP Sure Start Runtime Intrusion detection incident was discovered. A security concern, such as a hacking attempt, is the most prevalent reason for this error and could indicate a faulty memory module. If the problem persists, upgrade the BIOS before contacting your IT administrator or HP Support.


Zayne Z

Meet Zayne VoIP Blog's dedicated Content Researcher with 5+ Years Experience. Passionate about VoIP technology, he delivers accurate, engaging articles, keeping readers informed on industry trends with excellence.