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  2. HTTP 502 - Wikipedia

    en.wikipedia.org/wiki/HTTP_502

    According to the specification, the 502 status code indicates that the server, while acting as a gateway or proxy, received an invalid response from an upstream server. The Occurrence [ edit ]

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The response provided by a cache is stale (the content's age exceeds a maximum age set by a Cache-Control header or heuristically chosen lifetime). 111 Revalidation Failed The cache was unable to validate the response, due to an inability to reach the origin server. 112 Disconnected Operation

  4. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    502 Bad Gateway The server is acting as a gateway or proxy, and received an invalid response from a downstream server while attempting to fulfill the request. [1]: §21.5.3 503 Service Unavailable The server is undergoing maintenance or is temporarily overloaded and so cannot process the request.

  5. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/ReCAPTCHA

    In 2013, reCAPTCHA began implementing behavioral analysis of the browser's interactions to predict whether the user was a human or a bot. The following year, Google began to deploy a new reCAPTCHA API, featuring the "no CAPTCHA reCAPTCHA"—where users deemed to be of low risk only need to click a single checkbox to verify their identity. A ...

  6. List of FTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_server_return...

    Range Purpose x0x: Syntax These replies refer to syntax errors, syntactically correct commands that don't fit any functional category, unimplemented or superfluous commands.

  7. List of Google April Fools' Day jokes - Wikipedia

    en.wikipedia.org/wiki/List_of_Google_April_Fools...

    Google Maps allows the user to start a treasure hunt by selecting the "Treasure" view from the top right. Google Maps notes that the "system may not be able to display at higher resolutions than paper print" and that the user should "take care when unfolding the map to avoid ripping it." Also, the user is warned to 'beaware [sic] of pirates'.

  8. Is Roblox safe for kids? Here's what parents need to know. - AOL

    www.aol.com/lifestyle/roblox-safe-kids-heres...

    On Roblox, it is especially dangerous because the currency is called “Robux” — a cute name that makes it even harder for kids to realize they are using real money.

  9. Fix problems signing in to AOL Mail - AOL Help

    help.aol.com/articles/fix-problems-signing-in-to...

    Sometimes the old "turn it off and on again" actually works. In this case, try completely signing out of your account then sign back in. Many times, this will help, especially in cases of bad passwords or some simple browser issues.