1. Review your REST API's CloudWatch metrics with the API dashboard in API Gateway. Here's how to fix 502 Bad Gateway error in NGINX. You can track the health of the service on the Azure Portal. There are a few other problems that can cause this too. and how to fix it? The gateway converts the protocol or format while transferring it. The 502 (Bad Gateway) status code indicates that the server, while acting as a gateway or proxy, received an invalid response from an inbound server it accessed while attempting to fulfill the request. So when you have a 502 error, its expected that the browser will also log a CORS error. The server sends a request to fetch the data required to display when a user visits a website. Such type of error is referred to as an HTTP Status Code Error. Sift through your logs. A 502 Bad Gateway Error means that the web server you've connected to is acting as a proxy for relaying information from another server, but it has gotten a bad response from that other server. Check your nginx config syntax: nginx -t. So we'll dive into a little of both. It generally occurs at the gateway. By doing this you will get all the information regarding the errors that have occurred due to any recently added application. This is often the simplest way to recover from one-time issues. There may be various reasons - high traffic on their network, a problem that prevents the ISP's network from connecting to the website's network, etc. Joined: Tue May 11, 2010 2:31 pm. The cors: true option you add to serverless.yml only helps make sure that the OPTIONS pre-flight requests work. Before reaching out to your host to see if they can resolve the 502 Bad Gateway error, there are some troubleshooting steps you can take to rule out an issue on your end. The firewall is used to block the transmission between the servers. I have.. Cleared the caches (all of it). If he had met some scary fish, he would immediately return to the surface. Several other reasons might lead to a 502 error. More great readings on Performance . So, clearing your browser cache could fix the error. by toast Mon May 17, 2010 2:32 pm. If the error persists, then proceed to the other fixes in this article. For solving the 502 Bad Gateway errors , you could refer to the following links which may be helpful : Try using mobile data. Additionally, you can choose to run your application on more than one instance . A gateway server means a server responsible for passing data and information between two networks or servers. Check out these common causes and ways to fix the 502 bad gateway error to and get back up and running. 7 Best Citrix Performance Monitoring Software 7 Best Citrix Performance Monitoring Software ; How to Check Disk Storage on Mac How to Check Disk Storage on Mac ; 5 Ways to Free up Memory/RAM on a Mac 5 Ways to Free up Memory/RAM on a Mac ; An Introduction to Supervisory Control and Data Acquisition (SCADA) for Beginners An Introduction to Supervisory . You might experience a 502 error if the server has completely failed. You can access this dashboard by going to the link https://.scm.azurewebsites.net/. No 5xx error will ever have any CORS headers. Use the F5 button to ensure a server-side refresh and not a cache refresh takes place. Ping tool So the error is often caused by the server of a website and not by you as the user. You should get a response that the DNS cache has been flushed, like the one below: This means all caches will be cleared and websites will be loaded freshly for you. All you need to do is add some triggers in the root web.config for your app. But, this 502 Bad Gateway Nginx error can happen due to an issue on your PC or your internet hotspot device.The following are some reasons:1. Today we've seen the top 5 causes for this error, and how to fix it. More often, the issue is on the website itself, and theres very little you can do. Request blocked by a firewall: With cyber criminals finding more and more ways to breach corporate networks, firewalls continue to play a key role in stopping them in their tracks.However, several . You can get a 502 bad gateway error when there's a problem with the server of the website you are trying to connect to. Its very likely that other people visiting the same website are experiencing the same thing. Communication problem between two servers5. Or use. Check Hosting Server Reload Web Page Clear Browser Cache Check DNS Issues Clear DNS Cache Disable CDN/Firewall Audit Themes/Plugins Check Error Logs Set PHP Timeout Check Custom Scripts 1. NGINX logging is active by default, and you can customize the location, format, and logging level. Servers Overloaded3. The fact that youre getting a 502 error is the actual problem. In case this error continues for days, you can record the time and the version of your browser to submit a report to your hosting provider. NGINX will return a 502 Bad Gateway error if it can't successfully proxy a request to PHP-FPM, or if PHP-FPM fails to respond. If nginx is not running you could start it with: systemctl start nginx. Shopify Staff (Retired) 551 78 119. This can also be because the content of the server might be violating the server providers terms and conditions. There are a number of key steps that users can take to attempt to fix a 502 Bad Gateway error. Connection proxy > server dropped To learn more, see our tips on writing great answers. Cause This problem is often caused by application level issues, such as: requests taking a long time application using high memory/CPU Another solution for this error is by checking your domains DNS records. Your Internet Service Provider can be the reason for connectivity issues. Find centralized, trusted content and collaborate around the technologies you use most. To make it clear, 502 Bad Gateway error is an indicator showing that there is an issue in a website's server communication. A gateway device is a node on a computer network that serves as a gateway to other web resources further upstream in the network. Then check the status agian and make sure that nginx remains running. You can stop this in the future by simply hosting or migrating your website to the most reliable and reputed web host, WPOven. I'm successful extracting information (GET) from many of the actions in the API endpoints, but there are a few that I'm getting an error 502 - Bad Gateway when querying those endpoints (I'm correctly authenticated to the API. which I didn't expect since I have the cors property in my serverless.yml set to true, which sets CORS configurations for the HTTP endpoint. The 502 gateway error could also be caused by a Domain Name System (DNS) issue. If you fix the cause of the 502 error, then youre likely gonna find that your CORS configuration is actually working as expected. If you are on Mac and youre getting the error on Chrome, then consider switching to Safari and vice versa. In case you have the correct DNS records set, you also have to keep in mind that changes in DNS can take time to propagate globally. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Browser problems4. I had it happen once and I did these steps and it has not happened again. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? An Error 502 Bad Gateway means there is a problem with the websites server, rather than your computer, router, or internet connection. Why doesn't Stockfish announce when it solved a position as a book draw similar to how it announces a forced mate? How can I use a VPN to access a Russian website that is banned in the EU? @sideshowbarker thanks for the explanation and direction. These errors are completely independent of your particular setup, meaning that you could see one in any browser, on any operating system, and on any device. There are other categories of 500 errors including: The causes of the 502 bad gateway error include an overloaded server, an error in the code, and yet-to-be-propagated domain names. Look for server connectivity issues. An HTTP 502 status code (Bad Gateway) indicates that CloudFront wasn't able to serve the requested object because it couldn't connect to the origin server. So, one cant say, whether it is blocked or not without conducting any further investigation. Server overload:An overloaded server is one of the most common causes of a 502 error. Your email address will not be published. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? Some example endpoints that have this behavior: /api/v2/protectedData/virtualMachines Ready to optimize your JavaScript with Rust? To do this, Unplug your internet modem and hold it up for 10 seconds. You can try these solutions for eliminating the problem. 1. More specifically, it describes a situation in which a website server received an invalid response from its inbound server. It is another common reason to face the 502 error. Error 502 occurs as a result of server overload. Go to the Azure Support site and click on Get Support. Several other reasons might lead to a 502 error. Reload the page. As you can see from the above post, there are sufficient methods available combining both user and developer-friendly available, With the help of which you can troubleshoot and try to fix a 502 bad gateway error on your WordPress site. But before that, let us understand what the error 502 bad gateway means. To rule this out, you can try accessing the site from a different Internet connection. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? "HTTP 502" You will find 502 Bad Gateway Error while- Nginx running as a proxy for Apache web server. You can make a tax-deductible donation here. I only get it when trying to log-in to the dashboard - 502 - then I open another window and access the website - the black WordPress border shows up and I go to "menus" or another link and then I can access the dashboard. The 502 Bad Gateway error is an HTTP status code that means that one server on the internet received an invalid response from another server. Since this could be the cause, try to access the website on another device or switch your internet connection source. Lets have a look at the various messages that you might face due to the 502 error. But that doesnt mean you have a CORS problem. It can be due to a system crash or sometimes the server is taken offline for maintenance or similar reasons. These memory dumps are snapshots of the process and can often help you troubleshoot more complicated issues with your app. Your server or host may be simply overloaded. Generally, a HTTP 502 / 504 errors occurs because your origin server (e.g., your web host) is returning this code to us, and Cloudflare returns this code in turn to your visitors. rev2022.12.11.43106. However, there might also be an issue with your local DNS cache. { "error": { "code": 502, "source": "japan-001.azure-apim.net", I have done EVERYTHING suggested. They are caused by a problem connecting to an upstream server - meaning your server is trying to initiate a process and this fails to work as expected or times out. For more information, see Auto-Healing Azure Web Sites. Your internet router or modem is a gateway device. This can happen because of various reasons which we'll cover in this article. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff. You can set the scaling to be Manual or Automatic. When you do run into issues with your app, the diagnostics tool will point out whats wrong to guide you to the right information to more easily and quickly troubleshoot and resolve the issue. It can also help in resolving this error. If this is the case, you can try to fix this by simply refreshing the webpage. By trying these solutions, you can get rid of this problem. After you configure an application gateway, one of the errors that you may see is Server Error: 502 - Web server received an invalid response while acting as a gateway or proxy server. Give your website mammoth growth withWPOvensFastest, andFully managed Dedicated Servers. So, if you clear the cache of your browser, you might resolve this error. 502 bad gateway error for cross-origin request. Below is a list of different variations you might see on the web: "502 bad gateway" "Error 502" "HTTP 502" Apart from this, rare cases might cause the error due to the browser version being outdated. Comb through your website's code to find bugs. If you need more help at any point in this article, you can contact the Azure experts on the MSDN Azure and the Stack Overflow forums. This temporary storage on your device contains information about visited domain names. Browser configuration problem2. Connect and share knowledge within a single location that is structured and easy to search. To learn more about the 502 Bad Gateway Error, you should have knowledge of how a browser loads data from the server. When browsing on the internet, users will see error messages from time to time. While doing per Click here. There is a chance that the corrupted files stored on your browser might be causing a 502 bad gateway error. Microsoft Azure publicizes each time there is a service interruption or performance degradation. Nginx running with PHP5-FPM. If the response isn't in the required JSON format, then reformat it. FeedBox, 10 Best WordPress Gallery Plugins Of 2023 [Reviewed], 10 Best WordPress Backup Plugins For 2023 (Free & Paid), 5 Best WordPress Hosting for Agencies (Ultimate Comparison), 11 Best WordPress Quiz Plugins Compared [Free & Paid], 9 Best WordPress Review Plugins For Your Website [2023]. If you read this far, tweet to the author to show them you care. The 502 Bad Gateway error is usually a network error between servers, meaning the problem is not with your computer or internet connection. This relies on various factors including time to live or TTL. Mostly, the 502 errors are the result of bugs in the PHP or the Server configuration or network errors among servers. Traffic. Step 4: Under, Clear browsing data, click on the Choose what to clear" button: Step 5: Make sure cached images and files are selected, then select Clear now: DNS problems could be the reason you keep getting the 502 bad gateway error while trying to visit a website. While it's out of your hands for the most part, there are a few things you can try to resolve the issue. If this error remains too long on your website, probably your website will be completely deindexed on the search engines as your website will not show any data to people leading to high bounce rates and dropping ranks. You can even reinstall the browser to check if this resolves the problem. Why do quantum objects slow down when volume increases? If you have any more methods or solutions, that we havent covered in this post, feel free to let us know in the comment section below. We can do this by pressing Ctrl + F5 on the keyboard (Windows/Linux), or Shift + Reload button in the toolbar (Safari browser), or CMD + Shift + R (Chrome and Firefox for Mac users). But this is a generic error, you wont be able to find out the root cause. In the case of a 502 bad gateway error, the server acting as the gateway, or proxy, received an invalid response from the main server that's upstream. 502 Bad Gateway in Nginx commonly occurs when Nginx runs as a reverse proxy, and is unable to connect to backend services. HTTP 502. To access App Service diagnostics, navigate to your App Service app or App Service Environment in the Azure portal. Using Azure PowerShell with Azure Resource Manager. If you continue to experience any issues, please try clearing your cache before logging in, or let us know by posting in a new topic with as much detail as possible! In more technical terms, the 502 in the error is an HTTP status code which indicates that one server received an invalid response from another server. Another way to fix this error is by starting a new Private or Incognito session in your browser. Cleared the DNS. When its indicators are completely turned off, You need to plug it in again and turn on the power on button and Wait for your computer to establish a connection again. When experiencing a 502 error, there are chances that the server of the website might be overloaded with a higher amount of traffic than it cannot handle. We have to tell the web browser to load the latest version from the site. @SagarV where would that be set within the code provided in the question? Server Crash. All rights reserved. ; 15+ Free Business Tools See all other free business tools our team has created to help you grow and compete with the big guys. Moreover, few DDOS protection systems are over-sensitive that start blocking the requests from servers. When I run this function through serverless offline I receive a proper response, but receiving an internal error in AWS (production) despite the function running successfully. Here is the function yaml setup: Is there something that I need to adjust with the API Gateway configuration or within my Lambda application? We hope, the methods mentioned in this post to fix 502 bad gateway errors will help you to bring your website to normal just like it was before the error. Restarted the computer. If you are experiencing a Server Error or 502 error when trying to access a site, it means that you are seeing a 502 Bad Gateway error. 269947. The gateway error will impact your workflow with users not being able to access your services. It's required for cookie access. Contact your host provider`. "502 bad gateway" and "503 service unavailable" are common errors in your app hosted in Azure App Service. Here are the most common reasons. Computers do a quick lookup to resolve a numeric IP to a standard format. I would need to set up a cluster in order to test your yml files. Note that these settings would work in the same way even if your application is not a .NET one. When you browse to the app, it returns a HTTP "502 Bad Gateway" error or a HTTP "503 Service Unavailable" error. RELATED How to Fix a 404 Not Found Error When NGINX proxy server receives a bad response, then it returns 502 Bad Gateway error to client browser. If youre getting this error, the first thing you should do is refresh the page after a couple of minutes and see if the website loads up again. The "502 Bad Gateway" error can also be caused by a temporary connectivity issue originating from your local ISP. Hello, Greetings from InterServer Support. HTTP status codes indicate a server error. Hello. Even try on another browser as well.Reset Internet configuration: You need to restart your internet modem. Since it's "just me", surely this is something I can fix. Your own device whether it's a computer or phone could be the reason youre getting the 502 bad gateway error. You can quickly check if there is a problem on your end by visiting a completely different website. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. The 502 Bad Gateway Error is a common internet problem that occurs when a server acts as a proxy or gateway and receives an invalid response in return. It means the problem is not coming from either your website, computer, or internet connection. The 502 Bad Gateway error is an HTTP status code which means one server received an invalid response from another while accessing/attempting to load the web page or fill another request by the browser. application crashing due to an exception. Full Name: toast. If the process goes down on one instance, the other instance will still continue serving requests. On the Azure Portal, on your apps blade, you have the options to stop or restart your app. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); SMTP Server For Testing So are the mega routers that your ISP uses to connect its users to the major trunks of the internet. All you have to do is just close the existing tabs and open a new Private or Incognito window. Whenever you encounter the 502 bad gateway error, one of the simplest solutions and the first step to fix this issue is to try reloading your website (F5 or Ctrl + F5). In the post it steps you thru how to clear the cache. Some other common server-side errors that you see are 504 Gateway Timeout Error, Error 500 internal server error, and dns_probe_finished_nxdomain. In the logs, review the format of your Lambda function's response to your API. Alternatively, you can also file an Azure support incident. A 502 error happens when one web server gets a response that is not valid from another web server. Connectivity. Some of the things that Kudu provides are: Another useful feature of Kudu is that, in case your application is throwing first-chance exceptions, you can use Kudu and the SysInternals tool Procdump to create memory dumps. Website Maintenance Cost: A Complete Breakdown Guide 2022, What Is HTTP Error 502 and How You Can Fix It? This issue impacting accessing admins has now been resolved. A 502 bad gateway error appears when you visit a website experiencing server communication issues. ; WordPress Theme Detector Free tool that helps you see which theme a specific WordPress site is using. Since 502 bad gateway errors can be triggered due to plenty of reasons, it would be very difficult for anyone to figure out the exact root cause. When using veeam monitor itself i get " Hardware information data is not availbable for this host". This is called the Kudu Console or the SCM Dashboard for your app. How to make voltage plus/minus signs bolder? This error means there is a networking error that is beyond your control, so it can be a temporary error while the server is getting a large amount of traffic or the server could be under a DDOS attack. By trying again in a while, you might not see this again. Faulty programming: Often enough, a glitch or coding error in a website's code might result in requests not being answered correctly, sparking the 502 Bad Gateway error to show up. Cleaned the disk. Sometimes, some browser extensions can also lead to errors while rendering the website, particularly AdBlock extensions. Asking for help, clarification, or responding to other answers. This can often occur with DDoS protection layers, which block requests from content delivery systems and cause the network to stop slowly. 3) Make Sure the Health of the Load Balancer Should be OK. Making statements based on opinion; back them up with references or personal experience. Re: 502 Bad Gateway. If your receive the same error, try visiting a different site to ensure it isn't your internet connection. Don't just manage your website errorsreduce the risk of them ever happening at all. Server failure and poor server management are two major reasons for triggering 502 bad gateway errors. Thanks for contributing an answer to Stack Overflow! Error in communication between two servers, Error 502 or commonly known as 502 bad gateway can also be due to problems on the server side or the Website itself. Founded in 2012 with an aim to deliver the best web hosting solution that's crafted for unmatched speed, high security and 24x7 support. Request blocked by a firewall: With cyber criminals finding more and more ways to breach corporate networks, firewalls continue to play a key role in stopping them in their tracks. Get started, freeCodeCamp is a donor-supported tax-exempt 501(c)(3) nonprofit organization (United States Federal Tax Identification Number: 82-0779546). Wherever you return a response from your Lambda function you need to include the specific header CORS requests. You can also manage your app using Azure PowerShell. Hi Jack, There are numerous strategies are accessible on the web to determine 502 bad gateway issue, probably the most effortless techniques are referenced here: Refresh your web page- This is one of the fundamental strategies which works for the majority of the errors on your browsers. Technically, 502 Bad Gateway means that a server received an invalid response from an upstream server while serving as a gateway or proxy. Why is there an extra peak in the Lomb-Scargle periodogram? In other words, there's been a communication breakdown. In your apps blade, click the Requests and errors tile. define('WP_DEBUG', ture);define('WP_DEBUG_LOG', ture);define('WP_DEBUG_DISPLAY', false); Therefore, you should not panic if you see 502 error Bad Gateway. England and Wales company registration number 2008885. puneet289. You can try to use another browser such as Chrome, Safari, Firefox, and Internet Explorer. SSL Checker This article helps you troubleshoot these errors. It is because the problem can range from user-level i.e browser settings to your CDN to the server level. The 502.3 error means that ARR server timed out response from server you are using as backend, additionally I suggest you to check below URL's http://forums.iis.net/t/1176851.aspx http://blogs.iis.net/richma/archive/2010/07/03/502-3-bad-gateway-the-operation-timed-out-with-iis-application-request-routing-arr.aspx To overcome this issue, you can disable the CDN temporarily. You can fix Error 502 by doing the following methods:Refresh your browser and reopen it: First, you need to close your current browser and hold up a couple of moments and reopen it. In the left navigation, click on Diagnose and solve problems. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, jQuery $.ajax(), $.post sending "OPTIONS" as REQUEST_METHOD in Firefox, How to get a cross-origin resource sharing (CORS) post request working, Access Control Request Headers, is added to header in AJAX request with jQuery, CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true, Solve Cross Origin Resource Sharing with Flask, API Gateway CORS: no 'Access-Control-Allow-Origin' header, Response to preflight request doesn't pass access control check, AWS S3 static site CORS jquery ajax POST to API Gateway, Access-Control-Allow-Origin issue when GET from API gateway and lambda. Do you believe that the ajax configuration could be the reason for the 502, Try NOT returning a promise. Not the answer you're looking for? If the 502 is generated by AWS because of some error (such as the Promise not resolving for the request), there will be no CORS headers so you will also see CORS errors. Find All Webmaster Tools, Different Variations You Might See In The 502 Bad Gateway Error, Impact of 502 Bad Gateway Errors on the SEO of Your Website, 5 Main Reasons that Cause 502 Bad Gateway Error, Open the command prompt on your windows pc and type, If you are a WordPress user you need to add the following codes in your wp-config.php. The browser caches or stores site data so the next time the user visits, it does not have to repeatedly download the same static content. Step 1: Click on the 3 horizontal dots on the top-right corner: Step 2: Select Settings: Step 3: Click on "Privacy, search, and services". Nginx running with PHP7-FPM. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Visit our corporate site www.futureplc.com Future Publishing Limited, Quay House, The Ambury, Bath BA1 1UA. We also have thousands of freeCodeCamp study groups around the world. There are numerous things that you can try to resolve this problem. RCSL: B98480 VAT number: LU34396973 +31 102233701 What is HTTP error 503 and how do you fix it? Opening Hours: How to perform a Ajax Request via browser to AWS API Gateway with CORs Policy? 07-06-2021 02:14 PM. Too many visitors can overwhelm a server and make requests impossible to resolve. However, if youre feeling up to it and are curious to see if you can do something yourself, there are several different tactics that may work. Books that explain fundamental chess concepts. This typically happens because of either network connectivity issues or something wrong with the servers. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. 2. On account of error 502, It is also possible that Your system or PC configuration doesnt match the network standards, which can be assumed if the code shows up when attempting to open any page.Causes of Error 5021. In Azure App Service, for increased performance and throughput, you can adjust the scale at which you are running your application. This problem is often caused by application level issues, such as: Troubleshooting can be divided into three distinct tasks, in sequential order: App Service gives you various options at each step. Check Hosting Server Here are the most common reasons. You can see this error on any device, browser, and operating system. First of all, You need to switch off the power supply of your internet modem. Sometimes server connectivity issues are resolved relatively quickly. Are you frustrated with the error message502 bad gateway displaying on your computer again and again? You can also reboot your devices computer, mobile phone, router, and modem. What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. If the Status Code isn't 502 on the server side, then this means that the 502 was issued by a network element. Zonat Sarl 14, rue Robert Stumper, L-2557, Luxembourg No. The requested content will appear if a server accurately responds to the requests. The Error 502 Bad Gateway message has been around for many years, which means websites have become quite skilful at fixing them in a well-timed fashion. For more information on scaling, see Scale an app in Azure App Service. Find jobs Company reviews Web developer and technical writer focusing on frontend technologies. If you are a developer or a server manager and you are facing this error, there are chances that you might be facing this error because of other factors. Restarted the browser. However, several firewalls can often go further than youd like and inadvertently treat a massive influx of legitimate users as an attempted cyber attack. Step 1: Click the 3 vertical dots on the top right corner: Step 2: Hover on More tools and select Clear browsing data: Step 3: Make sure you select "Cached images and files" as part of the data to clear, then click on the "Clear data" button: Step 1: Click on the 3 horizontal dots on the top-right corner: Step 3: Click on "Privacy, search, and services. Level 1. If you cannot connect to a service right away because of 502 Bad Gateway, all that is required to fix the issue is to wait half a minute or so before you try to connect to the site or server again. 17 most common Windows 10 problems and how to fix them. Though you can always restart the app from directly within the Azure Portal, AutoHeal will do it automatically for you. Resolution. 502 Bad Gateway Error: Simple Explanation and How To Fix 502 Bad Gateway Error is a HyperText Transfer Protocol (HTTP) status code occurring when a gateway receives an inadequate response from the other servers. Should teachers encourage good students to help weaker ones? Many server errors are only temporary, not permanent, and 502 bad gateway is no exception. The cors: true option you add to serverless.yml only helps make sure that the OPTIONS pre-flight requests work. Our mission: to help people learn to code for free. Symptom When you browse to the app, it returns a HTTP "502 Bad Gateway" error or a HTTP "503 Service Unavailable" error. Bad buffering / timeout configuration. not correctly configured servers4. If you can do this without any problems, then you can be assured that your connection is fine. Your email address will not be published. It is an error that you might see because the server was not able to provide a valid response to the request. Try switching the web browser. If you dont see this error when you change your browser, this indicates that the problem was in the browser. Causes Fixes; 1: Service errors: Identify and fix the reason for service downtime and restart the service. Error 502 is an Html status code that defines The server works as a passage or proxy and got a not valid response from the server. -or-. debug console in which you can run PowerShell cmdlets and basic DOS commands. This is where the server has reached its memory capacity,often activated by an unusually high number of visitors trying to access the same website. Then you landed on the right page. Since the cause of the 502 bad gateway error could be due to an outdated browser or ad blockers, you should consider changing to a different browser and see if the error persists. This can be due to service crashes, network errors, configuration issues, and more. How to Fix a 502 Bad Gateway Error Reload the page. Nginx running with other services as a gateway. Errors in PHP programming2. This error is also known as 502 error code, HTTP 502 error, error reference number: 502, HTTP status code 502, and WordPress 502 error. The HyperText Transfer Protocol HTTP 502 Bad Gateway error usually comes from the server end and doesnt have anything to do with your computer locally. 5 Main Reasons that Cause 502 Bad Gateway Error It is an error that you might see because the server was not able to provide a valid response to the request. 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