Hi everyone, I worry about this please its urgent... I have two squids working with the same squid.conf and same steps for installing all, centos 5.2, both authenticate users of an AD with NTLM. So my squids were working well a good time but now some times ceases to authenticate the users, all the users can't authenticate, and when this occurs I restart de winbindd services and work the authentication again. This happened with both squids at the same time and both aren?t sync, they are for different networks. The AD doesn?t show any problems but I'm not sure. This is the error that appears in the messages archive: winbindd[11358]: [2009/09/08 13:09:53, 0] rpc_client/cli_pipe.c:rpc_api_pipe(790) Sep 8 13:09:53 s7729w50 winbindd[11358]: rpc_api_pipe: Remote machine s7729502.pe.igrupobbva pipe \NETLOGON fnum 0x4007returned critical error. Error was NT_STATUS_PIPE_DISCONNECTED And it repeats until I restart the services. Please any thought about what could be the problem or explaining what refers with NT_STATUS_PIPE_DISCONNECTED. I found in Google people asking with almost the same problem but no one answer. Thanks for answering Hasta luego. Daniel Merino Consultor Junior en Seguridad Informática Secure Soft S.A.C. C Begonias 630-656 Oficina 14 (Segundo Piso) San Isidro. Lima27 - PERU (511) 994622555 (RPC) (511) 4402031 (TeleFax) + dmerino@xxxxxxxxxxxxxxxxx : http://www.securesoft.com.pe __________ Information from ESET Smart Security, version of virus signature database 4403 (20090907) __________ The message was checked by ESET Smart Security. http://www.eset.com