.NET Framework 1.1 Service Pack 1 SYSTEM.WEB.DLL and MSCOREE.DLL Security Update for Windows 2000/XP/2003 x64/IA64

Used .NET Framework 1.1 Service Pack 1 SYSTEM.WEB.DLL and MSCOREE.DLL Security Update for Windows 2000/XP/2003 x64/IA64 for Windows?

Editors’ Review

Download.com staffFebruary 26, 2026

This update addresses a critical security vulnerability in the .NET Framework 1.1, protecting Windows systems from unauthorized access and control.

Pros
- Protects Windows systems from attackers.
- Addresses a critical security issue.
- Prevents system compromise.
- Allows users to maintain control.
Cons
- Specific to .NET Framework 1.1.

.NET Framework 1.1 Service Pack 1 SYSTEM.WEB.DLL and MSCOREE.DLL Security Update for Windows 2000/XP/2003 x64/IA64

Used .NET Framework 1.1 Service Pack 1 SYSTEM.WEB.DLL and MSCOREE.DLL Security Update for Windows 2000/XP/2003 x64/IA64 for Windows?

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Full Specifications

GENERAL

Release: August 15, 2007

Latest update: February 26, 2026

Version: 1.1

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 10
Windows XP
Windows 2000

Additional Requirements: Windows 2000/XP/2003 Server

POPULARITY

Total Downloads: 7,766

Downloads Last Week: 0

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Developer’s Description

Protect your Windows-based system from attackers.

A security issue has been identified that could allow an attacker to compromise your Windows-based system running the Microsoft .NET Framework 1.1 and gain complete control over it. You can help protect your computer by installing this update from Microsoft. This version is the first release on CNET Download.com.