Hello, Can somebody say me if WWW-Authenticate header is really functional on Squid 2.7.4 because I spent the whole day trying to help one business user with his application and always receive 401 error code. my proxy should reach the origin IIS server directly next to the always_direct/never_direct definitions and this is what I see in the logs. this does not work so I also made a special cache_peer definition and tried with or without connection-auth=on, connection-auth=off .. I also tried with login=PASS but nothing works ... so my question is .. Is that a normal behaviour ? Do I do something wrong ? Do I have to do something else ? many thks Vincent. ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. ----------------------------------------------------------------- ING Belgium SA/nv - Bank/Lender - Avenue Marnix 24, B-1000 Brussels, Belgium - Brussels RPM/RPR - vat BE 0403.200.393 - BIC (SWIFT) : BBRUBEBB - Account: 310-9156027-89 (IBAN BE 45310-9156027-89). An insurance broker, registered with the Banking, Finance and Insurance Commission under the code number 12381A. ING Belgique SA - Banque/Preteur, Avenue Marnix 24, B-1000 Bruxelles - RPM Bruxelles - tva BE 0403 200 393 - BIC (SWIFT) : BBRUBEBB - Compte: 310-9156027-89 (IBAN: BE 45310-9156027-89). Courtier d'assurances inscrit a la CBFA sous le no 12381A ING Belgie nv - Bank/Kredietgever - Marnixlaan 24, B-1000 Brussel - RPR Brussel - btw BE 0403.200.393 - BIC (SWIFT) : BBRUBEBB - Rekening: 310-9156027-89 (IBAN: BE45 3109 1560 2789). Verzekeringsmakelaar ingeschreven bij de CBFA onder het nr. 12381A. -----------------------------------------------------------------