Hello, I have upgraded to httpd 2.2.21, but am still having the same problem. Does anyone have any ideas on why LDAP authentication against Active Directory works fine for a while and then stops working, giving the error message below? Thanks, J ----- Original Message ---- From: Mr Jerry J <jerryj22@xxxxxxxxx> To: users@xxxxxxxxxxxxxxxx Sent: Mon, October 17, 2011 2:31:15 PM Subject: ldap authentication works for a while then starts failing Hello, I am using httpd 2.2.19 running on Windows Server 2008. I am authenticating with ldap against Windows Active Directory. It will work fine for a while. Sometimes a day. Sometimes a week. And then I will start getting the following log message (server names, user names, etc have been changed). [Mon Oct 17 02:35:35 2011] [debug] mod_authnz_ldap.c(403): [client 192.168.111.111] [3444] auth_ldap authenticate: using URL ldap://ldap.mydomain.com/DC=mydomain,DC=com?sAMAccountName?sub?(objectClass=user) [Mon Oct 17 02:35:36 2011] [info] [client 192.168.111.111] [3444] auth_ldap authenticate: user username authentication failed; URI /aaa/bbb [ldap_search_ext_s() for user failed][Operations Error] I have tried searching for similar cases, but I couldn't find any other cases where it works fine for a while and then stops working. Does anyone have any idea of what could be causing this? Thanks! -J --------------------------------------------------------------------- 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 --------------------------------------------------------------------- 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