Sign in. United States English. Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:. Archived Forums. Thanks in advance. Thanks Jim. So as far as I could uderstand from your answers -- it's pretty random and unpredictable behavior. Office Office Exchange Server. Not an IT pro? Microsoft Forefront TechCenter.
Sign in. United States English. Ask a question. Quick access. On the Tools menu, click Internet Options. If you connect to the Internet by using a proxy server on the local area network, click LAN Settings. If you connect to the Internet by using a proxy server for a dial-up connection or a VPN connection, click that connection, and then click Settings. If the following conditions are true, the Windows Update client locates the proxy server by processing the automatic configuration script:.
The Use automatic configuration script check box is selected in Internet Explorer. To view the Use automatic configuration script check box, follow these steps:. If you connect to the Internet by using a proxy server for a dial-up or VPN connection, click that connection, and then click Settings. If the following conditions are true, the Windows Update client uses the user-defined proxy server to connect to the Internet:.
The Windows Update client cannot locate a proxy server by using automatic detection or by using an automatic configuration script. Note the value that appears in the Address box under Proxy server. If no proxy server is defined in Internet Explorer, the Windows Update client uses the proxy server that was configured by using the Proxycfg.
If the following conditions are true, the Windows Update client tries to connect to the Windows Update Web site directly:. In this scenario, if a proxy server is required to connect to the Internet, the Windows Update client cannot successfully connect to the Windows Update Web site. The Proxycfg. Additionally, you can use this tool to help you troubleshoot proxy server discovery problems in the network. In this situation, you can use this tool to help verify that an issue occurs because of a failure to discover a proxy server by using the other discovery methods, such as WPAD.
If you run the proxycfg. In this situation, you receive results that are similar to one of the following results. Click Start , click Run , type cmd, and then click OK. In this command, replace proxyservername with the fully qualified domain name of the proxy server. Information: Sites required for Windows Updates You can allow access to all sites required by Microsoft Windows Updates by setting up some policies in the WebMarshal configuration.
The list above was taken from Microsoft KB If you continue to encounter problems after completing the steps in this article, use the Active Sessions feature in WebMarshal Console to identify any blocked sites and add them to the list. Create a new Standard Rule similar to the following. Proxy authentication options Windows Update cannot use a proxy that requires account authentication; there is no method to save a credential. Several possibilities are available to enable automatic updating through a proxy.
Use WSUS. You can configure the WSUS server to use proxy credentials. This is the recommended option for enterprise scenarios and provides greatest flexibility. Search Microsoft Technet for the latest version of documentation.
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