The 502 Bad Gateway error is an HTTP Status Code (HTTP Status Code) error, which means that one server received an “invalid” response from another server.
1. What is a 502 Bad Gateway Error?
Every time you visit a website, your browser sends a request to the web server. The web server receives and processes the request, and then sends back the requested resources along with the HTTP header and HTTP status code. Normally, the HTTP status code is not seen unless there is a problem. It’s basically the server’s way of notifying you that something went wrong, along with code on how to diagnose the problem.
There are different types of 500 status error codes (500, 501, 502, 503, 504, 520, etc.), and their meanings may differ slightly. These errors indicate that the request was accepted but that the server prevented the execution of the request. In this case, the 502 Bad Gateway error specifically means that a server, while acting as a gateway or proxy, received an invalid response from the inbound server.
How Does SEO Affect by a 502 Bad Gateway Error?
Unlike the 503 error, which is used for WordPress maintenance mode and requires Google to check back later, the 502 error can have a negative impact on SEO if not fixed immediately. If the site is down for an extended period of time, say more than 6 hours, Google may consider the 502 error to be a site-level issue that needs to be addressed. This can affect your rankings. If you are worried about 502 errors repeating, you should find out why they are happening. Some of the solutions below may help.
2. Signs of a 502 Bad Gateway error
The Bad Gateway error on each site will be different. However, if you encounter a Bad Gateway error, you will see one of the following error messages:
“502 Bad Gateway”
“502 Service Temporarily Overloaded”
“Temporary Error (502)”
“502 Proxy Error”
“502 Server Error: The server encountered a temporary error and could not complete your request.”
“502. That’s an error.”
“Bad Gateway: The proxy server received an invalid response from an upstream server.”
“HTTP Error 502 – Bad Gateway”
The 502 Bad Gateway error displayed in the Internet browser window is similar to that on the web page.
“Fail Whale” is one of Twitter’s “infamous” errors, and the essence of this error is the 502 Bad Gateway error.
The Bad Gateway error in Windows Update typically generates error code 0x80244021 or the error message WU_E_PT_HTTP_STATUS_BAD_GATEWAY.
When Google services, such as Google Search or Gmail, encounter a 502 Bad Gateway Error, it usually displays a Server Error or, in some cases, simply displays a 502 on the screen.
3. The cause of the 502 Bad Gateway error
Typically, the bad gateway error occurs as a result of a problem between online servers over which you have no “control.”
The Microsoft IIS web server management system usually provides more detailed information about the cause of the 502 Bad Gateway error by adding additional parameters after the 502, such as HTTP Error 502.3: Web server received an invalid response while acting as a gateway or proxy.
4. Some solutions to fix the 502 Bad Gateway error
As mentioned above, the cause of the 502 Bad Gateway error is due to a server failure or a problem that you cannot control.
To fix this error, you can refer to some solutions below:
Method 1: Reload the URL again
Try reloading the URL again by pressing the F5 key or clicking the Refresh / Reload button.
The 502 Bad Gateway error occurs because the server is down for an upgrade; it is only a temporary error, so you can apply the solution of reloading the page again to fix the error.
Method 2: Restart your browser
Close all windows on your browser, then open your browser again, and try opening the website you want to visit again.
The 502 error that occurs may be because your computer has a problem while you are browsing the web in the browser. The simplest way to fix the 502 error in this case is to restart your browser.
Method 3: Clear your browser’s cache
“Outdated” or corrupted files stored in your browser can be the cause of the 502 error. In this case, just clear the cache files and try to open the page you want to access.
Refer to the steps to clear the cache on your browser here.
Method 4: Clear browser cookies
“Outdated” files or corrupted files stored in your browser can be the cause of the 502 error. If you have applied the solution to delete the browser cache files, you still cannot. If you can’t fix the 502 error, you can think of a solution that is to delete cookies on your web browser to fix the error.
Refer to the steps to delete cookies from browsers here.
Note: If you do not want to delete all cookies from your browser, you can search for and delete cookies associated with the website that returns a 502 error.
Method 5: Start the browser in Safe Mode
When your browser runs in Safe Mode, it will run with default settings without add-ons, extensions, or toolbars.
During the process of running the browser in Safe Mode, if the 502 error does not occur, then you can confirm that the cause of the 502 error is due to extensions or browser settings. Then you just need to reset the browser settings to their default mode or find and disable the extensions that are the cause of the error.
Note: To run the browser in Safe Mode, you just need to start your Windows computer in Safe Mode and run whatever browser you use.
Method 6: Use another alternative browser
You can use an alternative browser, such as Chrome, Firefox, Internet Explorer, Microsoft Edge, or Safari.
If you have applied the above solutions and still do not fix the 502 error, you can use another alternative browser to browse the web. If the 502 error does not appear in other alternative browsers, the cause of the error may be something wrong with your native browser. You can then uninstall that browser, then proceed to download and reinstall the browser to fix the error.
Method 7: Using Software Update 1 for Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1
If you have installed MS Forefront TMG SP1, and in the process of accessing a certain website, you receive the error Error Code: 502 Proxy Error. The network logon failed. (1790) or other similar error messages.
You can then download and install Software Update 1 for Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1 to fix the error.
DOWNLOAD Software Update 1 for Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1 and install it here.
This solution is not a general solution to fix the 502 Proxy Error error, but is only applicable in some specific cases.
Method 8: Restart your computer
Some temporary problems in the process of your computer connecting to the Internet can be the cause of the 502 error. This case is very simple; you just need to restart your computer to fix the error.
Method 9: Restart network devices
Sometimes, in some cases, problems with modems, routers, switches, or other network devices can also cause 502 errors or 502 Bad Gateway errors. In this case, you just need to restart the devices—modems, routers, switches, etc.—and you’re done.
Method 10: Change DNS
Modify the DNS settings on your servers, routers, computers, or devices. Bad gateway errors can occur as a result of temporary DNS server issues.
Method 11: Contact the site directly
This is also one of the good solutions to fix the 502 Bad Gateway error. Chances are that in many cases, the site is down and the site’s administrators have not “fixed” the error, which is the cause of the 502 Bad Gateway error.
You can visit the Website Contact Information page to see a list of contacts for some of the most popular websites today. Most websites have social media accounts used to support their services, and some even include email and phone numbers for users to contact.
Method 12: Contact your Internet service provider
The final solution to fix the 502 Bad Gateway error is that you can contact your Internet Service Provider to find the cause and fix the error.
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