Software Update Services does not resubmit proxy request with credentials if anonymous request fails

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When you try to synchronize your Microsoft Software Update Services (SUS) host with the Microsoft public Windows Update site, you may receive the following error message:
Manual Sync Started- Date and Time Failed
Updates Added:
Updates Removed:
Reissued Update(s):
Failed to download from URL ''. (Error 0x80190194: HTTP error 404. The system cannot find the file specified.)
Sync Finished-Date and Time
This problem may occur if you have installed the hotfix and added the registry keys that are described in the following Microsoft Knowledge Base article:
297324 Multiple authentication dialog boxes are displayed when you use access control
The problem occurs because the SUS Synchronization service does not retry proxy connection requests if the proxy server does not send a "Proxy Authentication Required" error message. Although the proxy credentials are set, the SUS Synchronization service first tries to use an anonymous request. When the call fails with the "Proxy Authentication Required" error message, the service submits the proxy credentials. Otherwise, the SUS Synchronization service does not submit the proxy credentials.

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


To install this hotfix, you must have Microsoft Internet Security and Acceleration Server 2000 Service Pack 1 (SP1) installed on your computer.

Restart requirement

You must restart the SUS Synchronization service. If a required file is locked, you may have to restart the server.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Size    File name   -----------------------------------------------   09-Feb-2004  16:41  79,872  Sus1.0-kb830700.msp

Hotfix installation instructions

To install this hotfix, follow these steps:
  1. Download the SUS10SP1.exe file.
  2. Click Start, click Run, type cmd in the Open box, and then press Enter.
  3. At the command prompt, switch to the folder that contains the SUS10SP1.exe file, type the following command, and then press ENTER:
    sus10sp1 /c /T:C:\Sus_Files
    Note The C in this command represents your hard disk drive.
  4. Type the following command, and then press ENTER:
    msiexec /p Full path of Sus1.0-kb830700.msp reinstall=all /qb
  5. When you are prompted to locate the SusSetup.msi file, locate the file in the C:\Sus_Files folder.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
816915 New file naming schema for Microsoft Windows software update packages
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 830700 - Last Review: 12/08/2015 05:08:55 - Revision: 3.2

Microsoft Software Update Services 1.0

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