Microsoft Word 1.1 from 1990 has been ported to Windows 11

Q: What system requirements are needed to build and run the native Windows x64 port of Microsoft Word for Windows 1.1a on Windows 11?

To build and run the native Windows x64 port on Windows 11 you need Visual Studio 2022, the Windows 10 or Windows 11 SDK installed via Visual Studio, CMake 3.25 or newer, and PowerShell. The project produces a native x64 executable that runs on modern PC hardware.

Q: Are prebuilt binaries available to download for this Word 1.1a port, or do I have to compile it myself?

No, the GitHub page does not provide prebuilt binaries, so you cannot download a ready-to-run installer. You need to build it yourself using Visual Studio 2022, the Windows 10 or 11 SDK, CMake 3.25 or newer, and PowerShell.

Q: Which development tools and SDKs are specifically required to compile the port (Visual Studio version, SDK, CMake, PowerShell)?

The port requires Visual Studio 2022, the Windows 10 or Windows 11 SDK installed through Visual Studio, CMake version 3.25 or newer, and PowerShell.

Q: Does the port include modern replacements for 16-bit assembly, segmented memory, and Win16 APIs as part of the build?

Yes. The port "builds the original Word source and resources together with modern replacements for the 16-bit assembly, segmented-memory, and Win16 platform boundaries," according to the GitHub description cited in the article.

A working, native Windows x64 port of Microsoft Word for Windows 1.1a is now available, letting you run the ancient app from 1990 on a modern PC.

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Kosta Andreadis

Senior Editor

Published Aug 11, 2026 2:03 AM CDT

1 minute & 15 seconds read time

TL;DR: A native Windows x64 port of Microsoft Word for Windows 1.1a (codename Opus) has been created, letting the 1990-era app run on Windows 11 by rebuilding its original source with modern replacements; the GitHub project requires Visual Studio 2022, the Windows SDK, CMake 3.25+, and PowerShell to build.

Voice: Kosta AndreadisSpeed

0:00 / 2:34

Microsoft Word began as a word processor for MS-DOS back in the 1980s, a time when most personal computer software was all about databases, spreadsheets, and typing up documents. Yes, a time when a PC was referred to as a Personal Computer because before then, computers were the size of rooms and limited to places like universities. Over the years, Microsoft Word has evolved, with the more familiar Microsoft Word for Windows version arriving in 1989.

Before Copilot, before Clipp, Microsoft Word for Windows was a simple word processor.

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With its old-school interface and lack of any special features like spell checking, it's a relic of a different time. One of the big innovations that Microsoft Word brought to the table was its WYSIWYG (What You See Is What You Get) design, meaning that what you saw on-screen was how the document would look when printed. The shift to Microsoft Word for Windows opened the door to a more intuitive user interface, helping MS Word become the most popular word processor on the market.

And with that, thanks to the source code for Microsoft Word for Windows 1.1a for Windows 3.0 becoming publicly available in 2014, someone has taken the time to port it to Windows 11 as an x64 Windows executable that can run on modern PC hardware.

Read more: Think Notepad is Bloatpad now? Microsoft's new lightweight text editor is coming to Windows 11

"This project is a fully working native Windows x64 port of Microsoft Word for Windows 1.1a, whose historical codename was Opus," jmarshall23 writes on the GitHub page for the port. "It builds the original Word source and resources together with modern replacements for the 16-bit assembly, segmented-memory, and Win16 platform boundaries."

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Question #1

What system requirements are needed to build and run the native Windows x64 port of Microsoft Word for Windows 1.1a on Windows 11?

Question #2

Are prebuilt binaries available to download for this Word 1.1a port, or do I have to compile it myself?

Question #3

Which development tools and SDKs are specifically required to compile the port (Visual Studio version, SDK, CMake, PowerShell)?

Question #4

Does the port include modern replacements for 16-bit assembly, segmented memory, and Win16 APIs as part of the build?

Have a question about this content not listed here? Ask below and TweakBot will answer it.

Unfortunately, the GitHub page doesn't have the binaries available so you can't install Microsoft Word for Windows 1.1a with a single click or two. To get it running on a modern Windows 11 PC, you'll need Visual Studio 2022, the Windows 10 or Windows 11 SDK installed through Visual Studio, CMake 3.25 or newer, and PowerShell. Basically the sorts of apps most developers and programmers are familiar with.