10637 2010-09-15 14:18:54 +0000 The remote server returned an error: (502) Bad Gateway while using w3c markup validation 2015-08-23 07:43:08 +0000 1 1 1 Unclassified Validator check HEAD PC Windows XP RESOLVED WONTFIX P2 normal --- 1 shehmed dave.null mike www-validator-cvs oldest_to_newest 39055 0 shehmed 2010-09-15 14:18:54 +0000 I am getting the following error when I use the w3c markup validator and using the given format to validate html. Format: string sValidateUrl = "http://validator.w3.org/check"; string sData = "output=soap12&fragment=" + HttpUtility.UrlEncode(HTMLString); Error: The remote server returned an error: (502) Bad Gateway. Error detail: Bad Gateway The proxy server received an invalid response from an upstream server Apache/2 Server at validator.w3.org Port 80 122732 1 mike 2015-08-23 07:43:08 +0000 Use https://validator.w3.org/nu/ instead.