I have uploaded my Wep application developed using JSP and servlets. I created war file and uploaded in public diectory but it is not running and and asking users to download that war file. I extracted my war file and uploaded whole wep application structure on heliohost but still it runs only JSP . Related Servlets and Java class files are not being identified. I got following Error: Not Found The requested URL /calculatorServer was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.2.23 (Unix) mod_ssl/2.2.23 OpenSSL/0.9.8e-fips-rhel5 mod_mono/2.6.3 mod_jk/1.2.35 FrontPage/5.0.2.2635 mod_bwlimited/1.4 mod_auth_passthrough/2.1 mod_wsgi/3.4 Python/2.4.3 Server at prayas.heliohost.org Port 80 Please help me about this.