An update is available that installs Key Management Service 1.1 for Windows Server 2003 Service Pack 1 (SP1) and later versions

This update installs Key Management Service (KMS) 1.1 on computers that are running Windows Server 2003 Service Pack 1 (SP1) and later versions. KMS 1.1 provides support for the following KMS client computers:

• KMS clients that are running Windows Server 2008
• KMS clients that are running Windows Vista

Update information

How to obtain this update

The following file is available for download from the Microsoft Download Center:
Download the Key Management Service version 1.1 (x86) package now.

The following file is available for download from the Microsoft Download Center:
Download the Key Management Service version 1.1 (x64) package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Installation instructions

To install KMS 1.1, follow these steps:

1. Use the Kmsw2k3.exe file to install KMS 1.0 for Windows Server 2003 if it is not already installed.
2. Run the KB948003.exe update file.
3. Restart the computer.
   
   Note If you do not restart the computer after you install the KB948003.exe file, you may receive the following error message when you enter the product key:
   Error: 0xc004f050 The Software Licensing service reported that the product key is invalid
4. From the Step-by-Step guide that is included in the update package, follow these steps:
   1. Install and activate the appropriate KMS key.
   2. Make sure that the firewall is configured correctly to enable incoming communication with the KMS host computer through TCP port 1688.
   3. Make sure that the KMS host computer is published by DNS SRV records to enable automatic discovery for KMS client computers.

For more information, see the Step-by-Step guide, or visit the following Microsoft Web site:

Prerequisites

To apply this update, you must have Key Management Service 1.0 for Windows Server 2003 SP1 or a later version of Windows Server 2003 installed.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

File information

The English version of this update 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 item in Control Panel.

Windows Server 2003, x86-based versions

Windows Server 2003, x64-based versions

KMS for Windows Server 2003

KMS for Windows Server 2003 is part of Microsoft Windows Volume Activation 2.0. KMS for Windows Server 2003 lets enterprise users host KMS on Windows Server 2003 to enable activation of Windows Vista by using the KMS key.

Microsoft Volume Activation 2.0 is a set of technical and policy-related solutions from Microsoft Software Protection Platform (SPP). Microsoft Volume Activation 2.0 provides Microsoft customers an easy and reliable way to protect and to manage their volume license keys.

For more information about Volume Activation 2.0, visit the following Microsoft Web sites:

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: