502 symptoms of HTTP Error
"502 HTTP error" appears and hangs the active program window.
On one or more Web sites, your browser displays a 502 HTTP error.
"Bad gateway “was displayed.
Windows is slow to respond to mouse or keyboard input.
Your computer periodically "freezes"for a few seconds each time.
Although it is not the main source of the error, your Internet browser may display error 502. For example, you may receive an HTTP 404 (Not Found error) message when you visit a website that is actually online and works correctly.

502 causes of HTTP Error
The virus or malware has corrupted your Internet browser or taken control of your browser.
The latest Windows-related software changes (installation or uninstallation) result from corruption in the Windows registry.
An external malicious program has infected the browser-related files with malicious intent.
Your Internet browser may display a 502 error due to malware infection. This malicious software can cause your Internet browser to behave extremely unintended and corrupt Windows registry to create even more annoying error messages.
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