error 502
502 - Web server received an invalid response while acting as a gateway or proxy server. There is a problem with the page you are looking for, and it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, it received an invalid response from the content server.
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hello joe,
follow the steps :
Refresh the page
Just click the refresh button in your browser window or press F5 on your keyboard . If you get lucky, this will solve the problem so you can get back to the task at hand .
Clear all cookies, site data and cache
- Click the 3 horizontal lines top right on the browser screen and select Options.
- Select the Privacy & Security panel and go to the Cookies and Site Data section.
- Click the Clear Data button. The Clear Data dialog will appear.
- Click Clear .
Start a new browser session or load the site on a different browser
- When starting a new session , simply close all open browser windows and then open a new one .
Check internet connection .
Important : Restart browser and Computer .
Tell me it helps then Mark solution .
Thanks and Regards,
Arman
There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites
https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message
Websites don't load - troubleshoot and fix error messages
http://kb.mozillazine.org/Error_loading_websites