.NET Framework 1.1

Enhanced version with improved performance

Version 1.1
Size 23.7 MB
Platform Windows XP
License Freeware
Release Date April 24, 2003
Developer Microsoft Corporation
.NET Framework 1.1 Interface

Key Features

IPv6 support
Mobile ASP.NET controls
Improved performance and security
Side-by-side execution with .NET Framework 1.0
New APIs for globalization
Enhanced debugging capabilities

About .NET Framework 1.1

Microsoft .NET Framework 1.1 was released in 2003 as an in-place update to .NET Framework 1.0. It introduced IPv6 support, mobile controls for ASP.NET, and security improvements.

What is .NET Framework?

Microsoft .NET Framework is a software development platform that provides a consistent programming model for building applications that have visually stunning user experiences and seamless communication.

Common Language Runtime (CLR): Manages memory and executes .NET code
Base Class Library: Provides fundamental programming functionality
Language Support: Works with C#, VB.NET, F#, and other .NET languages
Application Models: Supports Windows Forms, WPF, ASP.NET, and more
Security: Built-in security features and code access security

.NET Framework 1.1 is required by many Windows applications to run properly. Without it, .NET applications will display error messages and fail to start.

Why Use Offline Installer?

The offline installer contains all necessary files to install .NET Framework without requiring an internet connection during installation.

No Internet Required: Install even when offline or with slow connections
Faster Installation: No need to download files during installation
Reusable: Install on multiple computers with the same file
Reliable: Less prone to installation failures due to network issues
Complete Package: Includes all components and dependencies

System Requirements for Windows XP

Windows 98, Windows ME, Windows NT 4.0 SP6a, Windows 2000, Windows XP, or Windows Server 2003
Minimum 96 MB RAM (128 MB recommended)
130 MB of available disk space
Pentium 400 MHz or compatible processor

Download .NET Framework 1.1

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Service Packs: SP1

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Frequently Asked Questions

Microsoft .NET Framework 1.1 was released in 2003 as an in-place update to .NET Framework 1.0. It introduced IPv6 support, mobile controls for ASP.NET, and security improvements. It's required by many Windows applications to run properly.

You need .NET Framework 1.1 if you want to run applications that were built using this version of the .NET Framework. Many software applications require specific versions of .NET Framework to function.

Yes, .NET Framework 1.1 is completely free to download and use. Microsoft provides it at no cost as it's essential for running .NET applications on Windows.

Yes, different versions of .NET Framework can coexist on the same computer. Some versions are in-place updates, while others install side-by-side.

The offline installer contains all necessary files and doesn't require an internet connection during installation. The web installer downloads files during installation and requires an active internet connection.

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Other .NET Framework Versions

.NET Framework 3.0

Foundation technologies for Windows Vista

November 6, 2006 v3.0
Download for Windows XP
.NET Framework 3.5

LINQ and enhanced web development

November 19, 2007 v3.5
Download for Windows XP
.NET Framework 4.0

Parallel computing and dynamic language support

April 12, 2010 v4.0
Download for Windows XP

Also Available: Browser Installers

Download offline installers for popular web browsers

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Google Chrome

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Mozilla Firefox

Fast, private & safe web browser

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Microsoft Edge Logo

Microsoft Edge

Fast and secure browser built for modern web

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