Today we will learn how to fix error 502 bad gateway! Most of the time while working on your website you would get a common error like error 502 bad gateway, but you don’t know about it, this blog post will help you how to fix it and what it is and how to do it. Avoid such mistakes.
As we know, this type of error must have been witnessed while surfing the internet, and you are curious about what 502 Bad Gateway means. Why did it happen? How to fix it while reviewing, what to do now? Well, why are you here? In the course of this blog post, we will help you with all this information.
502 errors are technically called 502 Bad Gateway. This can happen due to multiple reasons, the website itself being faulty or the main reason behind it, but sometimes your computer is having problems. We will look at fixing this error later in the article. There are also 502 error types; For example, if you are working with WordPress and encounter this error, it can be very frustrating to resolve. If you are not aware of such errors, it can rob you of motivation to work, but we have almost every answer to fix the 502 errors.
What is the error 502 bad gateway?
Technically, 502 Bad Gateway means that a server received an invalid response from an upstream server while serving as a gateway or proxy. A gateway server means a server responsible for passing data and information between two networks or servers. The gateway converts the protocol or format while transferring it.
Too technical to understand? Here’s the meaning in simple terms.
In other words, 502 Bad Gateway means that the server you are working on received an invalid response from another server because your server is acting as another server’s gateway. This error is a way to show that something is wrong with the server communication.
For a more detailed explanation, you need to know that every time you access a website, your browser sends a request to the respective web server. As with any basic input-process-output function, the web server receives and processes the request and then returns the requested code/information that the browser requested. This requested data comes with an HTTP header and HTTP status code.
This HTTP status code isn’t necessary unless everything is running smoothly, but if the browser gets an HTTP status code, it means something went wrong. Sending an HTTP status code is the server’s way of letting you know that there is an error and your website will display the error. That means the request was received but not fulfilled.
Since the error code is generic, we can’t figure out exactly what went wrong. There are many 500 status error codes. This brings us to a brief description of the 502 error types.
Different names for the same error condition
- “Error 502”
- “502 Bad Gateway”
- “502 Proxy Error”
- “502 Service temporarily overloaded.”
- “HTTP Error 502 – Bad Gateway”
- “HTTP 502”
- “502 Server Error: The server encountered a temporary error and was unable to complete your request.”
- “502 Bad Gateway NGINX”
- A blank white screen
- temporary error (502)
- 502. This is an error
- 502 Bad Gateway Cloudflare
- Bad Gateway: That proxy server received an invalid response from an upstream server
- “502 – The web server received an invalid response when acting as a gateway or proxy server. There’s a problem with the page you’re looking for, and it can’t be displayed. When the web server (acting as a gateway or proxy) with the upstream content server When contacted, it received an invalid response from the content server.”
What’re the Causes of a 502 Bad Gateway Error?
There can be many reasons for errors to occur; Some of these reasons are listed below:
- The website is heavily loaded, which means there are too many users on the same website at the same time.
- There may be some problem with your computer or browser.
- The domain name is not resolvable.
- The origin server is down. The origin server may be too busy, or the connection between servers may be disconnected.
- Firewalls sometimes block requests. Firewalls sometimes block communication between the edge server and the origin server.
Whatever the reason, we have all possible solutions for you.
How to fix error 502 bad gateway?
These solutions depend on whether the problem is from your end or the origin server. If the problem is from the origin server, there is not much you can do, but we should try our best to deal with it.
1. Reload or refresh the page
This is a classic fix for any error on any website. This has proven effective in solving the problem for the most part. This is also the easiest way to resolve the issue.
This is your first course of action when encountering this problem. If the website doesn’t load right away, wait a minute or two and then try again to reload the page. The shortcut to reload is Ctrl+F5 or F5.
This method has a 50-50 chance of working because sometimes the error that occurs is temporary and waiting a few minutes can fix the problem by refreshing the page. But sometimes, as we discussed, the error is from the origin server, and refreshing the page may not work, but it’s worth a try.
2. Check if the site is blocked for you or everyone
Whenever you encounter a 502 Bad Gateway error, you can check if your server is down or if it is a root server problem. This can be checked by copying your website URL to some website that checks if the website is down overall.
This method will let you know where the problem lies and help you troubleshoot accordingly. For example, if the site is down for everyone, you won’t be able to do much. You just have to wait, and you can use that time for something else.
3. Try a different browser to fix error 502
This method helps you troubleshoot to find where the problem is; If the website works in other browsers, it means your browser has a problem.
If the website still doesn’t work in other browsers, then you know it’s not your problem, and you can move on to other solutions.
4. Clear your browser’s cache to fix error 502
This may be one of the reasons why your browser is not working. You don’t clear your browser cache for too long and the browser gets old or corrupt files which can accumulate 502 errors.
Clearing your browser’s cache from time to time is also healthy for your browser and helps it run smoother and you are less likely to encounter 502 Bad Gateway errors.
For Chrome, you must press Ctrl+H to go to the History page, select the desired cache and websites and click Delete. For other browsers, you can easily find the guide online.
5. Start your browser in safe mode
A safe mode for your browser is to use it with or without extensions and add-ons. If your safe mode is enabled, the browser will delete your cookies and cache history at the end of the session. After you have successfully disabled all extensions, reload the page and see if the error is displayed If the error is resolved, it means the extension is causing a problem between the sites.
Another cause of the error could be plugins. After you disable all your extensions and the error still appears, the plugin may be causing the problem Activate your plugins one by one to find the culprit.
6. Restart the device
When you have checked everything from your side, and you know that the site is down only for you and your browser is working, it means that your device might be experiencing some temporary issues and a simple restart of the device can help you fix those issues.
7. Change the DNS server
A problem with your DNS server can cause 502 errors to appear on websites. A DNS server change was found to be effective. Your DNS server is not responding because it was too congested due to all the caches being collected.
Just flushing your DNS cache will help you solve many problems. It’s just like deleting any other history from your device. Instructions for flushing the DNS cache are readily available online.
Changing your DNS server to a third-party server may also prove useful. It can also help you improve your networks overall, such as by increasing speed or reliability.
8. Fix faulty firewall configuration
A faulty firewall configuration will prevent your request from reaching the original host server and result in a 502 Bad Gateway error on the server and project. Check your firewall configuration and fix the problem.
A firewall causes the error because the firewall is responsible for protecting your website or browser from viruses and malicious visitors.
9. Temporarily disable CDN or firewall
CDN stands for Content Delivery Network. CDN 502 Bad Gateway can be a cause of the error. You are using a 3rd party CDN provider
If changing the firewall and CDN configuration doesn’t work, try temporarily disabling them and reloading the website. This method is not 100% effective, but it is worth trying to see the problem.
10. Contact your host to fix error 502
This is the last method to try when you have tried everything and nothing works, which means the problem is from the host server. Try contacting or contacting your host service and ask them to fix the bug for you.
Please call or tag their official Twitter pages to report a bug on their server As they have an official team to resolve any issues you may have, it will be easy for them to resolve them.
Conclusion
When you have 10 solutions to a problem, one of them might work for you. There is also a slight chance that these methods may not work because the reason why the error appears is completely different from what we predicted.
Your position as a user also affects the problem, as there are different ways to resolve the 502 Bad Gateway error if you’re a web developer and then if you’re a visitor. If the first 9 methods do not work, we are sure of the 10th method to contact your host. This is the last option for how to resolve HTTP 502 errors; Most of the time, minor issues can be resolved from the user’s side. If the problem is on your end and you can fix it, it will save you a lot of trouble with the league going to the host companies and asking them to fix a problem just for you. If you want to build your website with WordPress, we recommend you buy this WordPress hosting.
