Guide to fix 502 Bad Gateway error

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.

1. Identifying signal of 502 Bad Gateway error

The Bad Gateway error on every website is different. However, if you encounter a Bad Gateway error, you will see one of the following error messages:

The 502 Bad Gateway error shows up in the Internet browser window is similar to that on the website.

“Fail Whale” is one of Twitter’s “notorious” errors, and the essence of this error is the 502 Bad Gateway error.

Bad Gateway error in Windows Update usually generates error code 0x80244021 or error message WU_E_PT_HTTP_STATUS_BAD_GATEWAY.

When Google services, such as Google Search or Gmail have a 502 Bad Gateway error, often shows Server Error or in some cases simply displays 502 on the screen.

2. What is the cause of the 502 Bad Gateway error?

Typically, Bad Gateway errors are caused by problems between online servers that you cannot “control” over.

Note:

Microsoft IIS web server management system often provides more detailed information about the cause of the 502 Bad Gateway error by adding additional parameters after 502, such as HTTP Error 502.3 – Web server received an invalid response while acting as a gateway or proxy.

3. Some solutions to fix 502 Bad Gateway error

As mentioned above, the cause of the 502 Bad Gateway error is due to a congested server error or something that you cannot control.

To fix this error you can refer to some solutions below:

1. Reload the URL again

Try reloading the URL again by pressing the F5 key , or click the Refresh / Reload button .

The 502 Bad Gateway error occurs because the server is suspended for the upgrade, it is just a temporary error, so you can apply the page reload solution again to fix the error.

2. Restart your browser

Close all windows in your browser, then reopen your browser again, and try opening the website you want to visit again.

Error 502 can be caused by your computer is having problems while you are browsing the web on the browser. The easiest way to fix the 502 error in this case is to restart your browser.

3. Clear the browser cache

Outdated files or corrupted files stored in your browser could be the cause of error 502. In this case just clear the cache files and try to reopen the page you want. Access is done.

Refer to the steps for clearing browser cache here.

4. Delete browser cookies

Outdated files or corrupted files stored in your browser could be the cause of error 502. If you applied the solution to delete browser cache files you still do not Fix 502 error, you can think of a solution is to delete cookies on your web browser to fix the error.

Refer to the steps for deleting cookies on browsers here .

Note: If you do not want to delete all cookies on your browser, you can find and delete cookies related to the website you visit with a 502 error.

5. Start the browser in Safe Mode

When your browser runs in Safe Mode, it means the browser will run the same default settings, with no add-ons, extensions and toolbars.

During the process of running the browser in Safe Mode, if there is no 502 error, then you can confirm that the cause of the error 502 is due to extensions or browser settings. Then you just need to reset browser settings to default mode or 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 any browser you use most often.

6. Use an alternate browser

You can use an alternative browser, such as Chrome, Firefox, Internet Explorer, Micorsoft Edge, or Safari.

If you have applied the above solutions and still cannot fix the 502 error, you can use an alternative browser to browse the web. If the 502 error does not appear on other alternative browsers, then the cause of the error may be due to something wrong on your native browser. Then you can uninstall that browser, then download and reinstall the browser to fix the error.

7. Use Software Update 1 for Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1

If you have MS Forefront TMG SP1 installed and while accessing a website, you receive an Error Code: 502 Proxy Error. The network logon failed. (1790) or other similar error messages.

Then you can 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 .

Note:

This solution is not a general solution to fix the 502 Proxy Error that is only applicable in some specific cases.

8. Restart your computer

Some temporary problems in the process of your computer connecting to the Internet can be the cause of error 502. This case is very simple, you just need to restart your computer to fix the error. .

9. Reboot the network devices

Sometimes in some cases, problems on modems, routers, switches or other network devices can also be the cause of the 502 error or the 502 Bad Gateway error. In this case you just need to restart the device: modem, router, switches … again is done.

10. Change DNS

Change DNS on Servers (servers), or your router, computers or devices. Sometimes Bad Gateway errors are caused by temporary problems on DNS Servers.

11. Contact the website directly

This is also one of the good solutions to fix the 502 Bad Gateway error. Most likely, in many cases, the website is faulty and the site administrators have not “fixed” the error, and this is the cause of the 502 Bad Gateway error.

You can visit the Website Contact Information page to see the contact list of some popular websites today. Most websites have social media accounts that they use to support their services, and some also include emails and phone numbers for users to contact.