Hi, We have been using Apache 2.0.59, and our application as running fine. When we upgrade Apache to 2.2.10, we start getting "500 Internal Server Error" consistently. After looking at error.log, we found following logs: ... [Tue Nov 18 18:23:28 2008] [error] [client a.b.c.d] Premature end of script headers: our_application.exe ... We have created alias for our application. I looked at the differences in modules/mappers/mod_alias.c and server/util_script.c between 2.0.59 and 2.2.10, but did not see any changes that could be related. I'm running this on Windows XP. Could someone please help ? Thanks in advance, Ravindra --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx