Microsoft Download Center Archive
 | Microsoft .NET Framework Version 1.1 Redistributable Package |
The .NET Framework version 1.1 redistributable package includes everything you need to run applications developed using the .NET Framework.
- The .NET Framework version 1.1 redistributable package includes everything you need to run applications developed using the .NET Framework.
The .NET Framework version 1.1 provides improved scalability and performance, support for mobile device development with ASP.NET mobile controls (formerly the Microsoft Mobile Internet Toolkit), support for Internet Protocol version 6, and ADO.NET classes for native communication with Open Database Connectivity (ODBC) and Oracle databases. It also enables the use of code access security to further lock down and isolate ASP.NET applications. For more information, read the .NET Framework Version 1.1 Product Overview.
Important: You cannot install two different language versions of the .NET Framework on the same machine. Attempting to install a second language version of the .NET Framework will cause the following error to appear: "Setup cannot install Microsoft .NET Framework because another version of the product is already installed." If you are targeting a non-English platform or if you wish to view .NET Framework resources in a different language, you must download the appropriate language version of the .NET Framework language pack.
Files
 | Status: DeletedThis download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020. |
| File | Size |
|---|---|
 dotnetfx.exeSHA1: 16a354a2207c4c8846b617cbc78f7b7c1856340e | 21.73 MB |
System Requirements
Operating Systems: Windows 2000, Windows Server 2003 Service Pack 1 for Itanium-based Systems, Windows Server 2003 x64 editions, Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 for Itanium-based Systems, Windows Server 2008 Standard, Windows Vista Business, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Ultimate, Windows XP, Windows XP Professional x64 Edition
- Microsoft Windows NT 4.0 requires Service Pack 6a.
Important: Make sure you have the latest service pack and critical updates for the version of Windows that you are running. To find recent security updates, visit Windows Update.- You must also be running Microsoft Internet Explorer 5.01 or later for all installations of the .NET Framework. Install Internet Explorer 6.0 Service Pack 1.
Installation Instructions
- Click the Download button on this page to start the download, or choose a different language from the drop-down list and click Go.
- Do one of the following:
- To start the installation immediately, click Open or Run this program from its current location.
- To copy the download to your computer for installation at a later time, click Save or Save this program to disk.