You are running 64-bit Windows. .NET 1.1 is 32-bit only. Solution: Enable 32-bit application support in IIS or use a 32-bit virtual machine. Install the x64 compatibility fix (KB928366).
If you still need to download .NET Framework 1.1.4322, here are some options:
Yes. Different versions of the .NET Framework can coexist on the same computer without conflicts. The installation fails on Windows 10/11. What should I do?
If using a third-party software hosting site, always verify the file integrity before launching the installer. Check the file properties for Microsoft's official digital signature or calculate the SHA-256 hash to ensure the file has not been altered. Windows Compatibility Matrix Operating System Compatibility Status Installation Method Native Support Runs natively; install via standard executable. Windows 7 / 8 / 8.1 Partial Support Requires running the installer in Compatibility Mode. Windows 10 Unsupported Net Framework 1.1.4322 Download
For system administrators, the update KB867460 (which updates to 1.1 SP1) can be found on the Microsoft Update Catalog. Search for “.NET Framework 1.1 SP1” or “KB867460”.
Note: Microsoft has officially ended support for .NET Framework 1.1 Migrate from .NET Framework 1.1 . The official download links may be hard to find, but it is still available through trusted archive sources. 1. Download the Installer
What is the you are trying to run?
To find the legitimate file:
I can provide custom command-line scripts to force-install the framework on your specific system. Share public link
This comprehensive guide covers how to securely download, install, and configure .NET Framework 1.1.4322 on modern operating systems like Windows 10 and Windows 11. Why Is .NET Framework 1.1.4322 Still Needed? You are running 64-bit Windows
If you are looking to run old programs, ensure you have a trusted source for the download and proceed with careful installation.
Run the following command to extract the Service Pack 1 installer:
Installing it directly on Windows 8, 10, or 11 often fails with "incompatibility" errors. Install the x64 compatibility fix (KB928366)
Because Microsoft officially ended support for .NET Framework 1.1 over a decade ago, the original direct download links on Microsoft’s main website have been retired. Finding a safe copy requires caution to avoid malware. 1. Trusted Archive Sites