Anyone know anything about this error: Error Code: 500 Internal Server Error. The size of the response header is too large. Contact your ISA Server administrator. (12216) It appears to happen when using Transfer-Encoding: chunk and the chunk size is very large, however that is not the response header. Response header, appears normal. HTTP/1.1 200 OK Content-Type: text/html Last-Modified: Wed, 22 Dec 2004 16:45:56 GMT Server: GWS/2.1 Cache-Control: private, x-gzip-ok="" Date: Thu, 23 Dec 2004 21:48:44 GMT Transfer-Encoding: chunked b15a. There is nothing in the Microsoft KB, however from doing a google search it appears that I am not the only one with this problem and there are no answer posts. -Wayne