Hi my auto updates on windows 2003 servers fail. The servers are web servers published on ISA. The system log shows Event 16 Unable to connect: Windows is unable to connect to the Automatic Updates service and therefore cannot download and install updates according to the set schedule. Windows will continue to try to establish a connection. I have the following settings: I have HTTP 1.1 over proxy enabled in IE settings Auto config script in IE Proxy and securnat client Require authentication in ISA IE has login with current username and password in security options. When I use updates site manually .. it goes through fine. Any Suggestions ? TIA Aman Bedi | Systems/Network Administrator (MCP, MCSD, MCSA 2000, MCSA 2003) 54 West 39th Street, 4th Floor, New York, NY 10018 | Fax +1(212) 202-4318 | Phone +1(212) 278-0178 ext 234 | www.scanbuy.com PRIVILEGED & CONFIDENTIAL The information contained in this email message is intended only for use of the person or entity to whom it is addressed. The contained information is CONFIDENTIAL and LEGALLY PRIVILEGED and exempt from disclosure under applicable laws. If you read this message and are not the addressee, you are notified that use, dissemination or reproduction of this message is prohibited. If you have received this message in error, please notify the sender immediately. ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- -------------------------------------