Microsoft KB Archive/936921

= A proxy authentication error occurs after Windows Server Update Services 3.0 is installed =

Article ID: 936921

Article Last Modified on 5/17/2007

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APPLIES TO


 * Microsoft Windows Server Update Services 3.0

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SYMPTOMS
You install Microsoft Windows Server Update Services (WSUS) 3.0, and WSUS 3.0 tries to download files or to synchronize files. However, a proxy authentication error occurs. For example, you receive the following error message:

407 Proxy Authentication Required.

This issue occurs even though the proxy credentials appear to be configured when you view the user interface.



CAUSE
This issue may occur if the following conditions are true:
 * A proxy password is configured on the server before WSUS 3.0 is installed.
 * The proxy password was not changed or was not reentered in the Windows Server Update Service Configuration Wizard during the WSUS 3.0 installation.
 * Changes are made to other configuration settings in the Windows Server Update Service Configuration Wizard during the WSUS 3.0 installation.

If these conditions are true, the Windows Server Update Service Configuration Wizard does not save the preexisting proxy password.



WORKAROUND
To work around this issue, use one of the following methods, as appropriate for your situation.

Method 1: Cancel the Windows Server Update Service Configuration Wizard

 * 1) When the Windows Server Update Service Configuration Wizard starts, click Cancel.
 * 2) Click Start, point to Administrative Tools, and then click Microsoft Windows Server Update Service 3.0.
 * 3) Expand  , and then click Options.
 * 4) In the Options pane, click the option that you want to configure.

Method 2: Reenter the proxy password in the Windows Server Update Service Configuration Wizard

 * 1) When the Windows Server Update Service Configuration Wizard starts, click Next.
 * 2) On the Specify Proxy Server page, click to select the Use a proxy server when synchronizing check box.
 * 3) Click to select the Use user credentials to connect to the proxy server check box.
 * 4) Type the credentials for the preexisting proxy password in the User name box, the Domain box, and the Password box, and then click Next.

Keywords: kbtshoot kbprb KB936921

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