What is a bad 502 gateway and how do I fix it?

When navigation Internet, you may encounter a number of different error messages. When this happens, your browser will tell you what the problem is by displaying a code that relates to the problem.

These codes all correspond to specific connection problems between the browser and the website it is trying to access. One of the most common codes in daily browsing is the 502 error, also known as a bad gateway, and this is rarely caused by a user’s computer or Wireless link.

Instead, the 502 error is usually symptomatic of something wrong with the server the end of the website you are trying to access, although it is difficult from a user’s perspective to see what may have triggered this. Usually this error indicates that there is a communication problem between the gateway and / or the proxy server and the upstream or origin server – although this is not always the case.

You can also meet the HTTP Error 503, which, although comparable to the 502 error, usually means that the server is unable to handle a browser request.

What are the causes of a 502 Bad Gateway error?

Server overload: This normally happens when a website receives a lot more traffic than it can handle. When a website’s server is oversaturated and reaches its memory capacity, it causes overload, and it is normally linked to an unusually high number of visitors trying to access the website at the same time. While it may simply be a coincidence or event, it can also be the result of a DDoS attack.

Request blocked by a firewall: As cybercriminals find more and more ways to penetrate corporate networks, firewall continue to play a key role in stopping them in their tracks. However, a number of firewalls can often go further than you would like and inadvertently treat a massive influx of legitimate users as an attempt. cyber attack. This can often happen with DDoS layers of protection, which block requests from content delivery systems and cause the network to shut down.

Programming faulty: Quite often, a problem or coding error in a website’s code can cause requests to be answered incorrectly, causing the 502 Bad Gateway error to appear.

Network errors: There are a multitude of potential network errors that can occur, including DNS issues, routing issues, and issues with your Internet Service Provider (ISP). An ISP, for example, may have decided to block a certain web address.

Server software expiration times: The error may also be displayed to users when a web server takes longer than expected to return a request and the caching tool reaches its time values. Slower queries can also cause this problem.

How to fix a 502 Bad Gateway error

There are a number of key steps that users can take in attempting to fix a 502 Bad Gateway error.

  1. Refresh your browser: Just refreshing the browser a few times may be the fastest way to fix the problem, if not immediately, maybe after a few minutes. This is because the error may have been caused by a temporarily overloaded server, which could have fixed itself.
  2. Clear your browser cache: This is one of the easiest yet most effective ways to overcome mistakes like this, and still one of the best places to start. You will need to go to the history of the web browser you are using and find the option to delete browsing data.
  3. Temporarily disable your firewall: Although we do not recommend disabling your firewall, doing so temporarily may be the best way to check if it is interfering with your attempts to access a certain site. Some vendors, for example, offer DDoS protection or full proxy services with additional firewalls. You will normally be able to disable your firewall through the administration console of your security provider.
  4. Check with monitoring sites: If that doesn’t work, you can always turn to online services like Down for everyone or just for me? or Stocking detector. These monitor the web for any outages and allow users to report any issues they may encounter. If this is an issue that isn’t just your concern, there’s a good chance others have reported it, and the more people reporting issues, the more likely it is. this is a protracted problem.
  5. Use a VPN to access the site: There are various online virtual private networks (VPNs) such as Hide my ass and others that can redirect your connection before accessing the site. This means that you will be able to determine if any issues may have arisen with your ISP, for example, when ISPs block access to certain sites for a particular reason.
  6. Examine the web server logs: If this error persists, further investigation may be required to find a solution. Examining the web server logs at the time the error occurs will be a good place to start. If you are the website owner, you can verify that your FQDN (Fully Qualified Domain Name) is resolved correctly. You can also verify that a server is reachable by pinging or traceroute.
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