- Home users:Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
- IT professionals:
How to obtain help and support for this security update
Help installing updates:
Support for Microsoft Update
Security solutions for IT professionals:
TechNet Security Troubleshooting and Support
Help protect your computer that is running Windows from viruses and malware:
Virus Solution and Security Center
Local support according to your country:
Download informationThe following file is available for download from the Microsoft Download Center:
Download the update 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:
PrerequisitesTo install this update, you must have Windows Installer 3.1 or a later version installed on the computer. To obtain the latest version of Windows Installer, visit the following Microsoft website:
Known issues and additional information about this security updateFor more information about installation issues this security update or with the Microsoft .NET Framework 1.1 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
2431728 Encrypted content in ASP.NET is not decrypted for a website that is deployed in a web farm
2431208 An update for the Microsoft .NET Framework may fail to install when the Microsoft .NET Framework 4 is installed and a restart is pending
923100 When you try to install an update for the .NET Framework 1.0, 1.1, 2.0, 3.0, or 3.5, you may receive Windows Update error code "0x643" or Windows Installer error code "1603"
938244 The file version is rolled back to the version that was installed by the last service pack when you remove an update for the .NET Framework 1.0, the .NET Framework 1.1, Visual Studio .NET 2002 or Visual Studio .NET 2003
2197103 A known issue when you try to install an update on a computer that does not have the Microsoft .NET Framework 1.1 Service Pack 1 installed
923101 Error message when you try to install a security update for the .NET Framework 2.0 on a computer that is running Windows Server 2003 x64 Edition: "Error 1324. The folder 'Program Files' contains an invalid character"
2260913 Files in use or File Locks can Result in Framework Assembly Files being Deleted
2263996 Patching of Microsoft Framework can fail with Access is denied or File in Use error
Command-line switches for this updateFor information about the various command-line switches that are supported by this update, see the Windows Installer command-line switches document.
For more information about Windows Installer, visit the Windows Installer MSDN website.
Restart requirementThis update does not require a system restart after you apply it unless files being updated are locked or in use. However, installing this update will trigger a restart of all Internet Information Services (IIS)-related services, including the IISADMIN, W3SVC, FTP, and SMTP services. This behavior occurs because a base component for the .NET Framework includes instructions for restarting these services. Therefore, every update to the product will execute the same restarting instructions.
Update removal informationTo remove this update, use the Add or Remove Programs item in Control Panel.
Update replacement informationThis security update replaces the following security update:
For Microsoft .NET Framework 1.1 Service Pack 1 on x86-based versions of Windows XP SP3 and Windows Server 2003 SP2
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