# Windows **URL:** https://forums.swift.org/c/platform/windows/67.md [Latest](https://forums.swift.org/latest.md) · [Categories](https://forums.swift.org/categories.md) · [Tags](https://forums.swift.org/tags.md) --- ## [Biweekly Windows Workgroup Agenda & Notes](https://forums.swift.org/t/biweekly-windows-workgroup-agenda-notes/89334)
**Author:** [@kellychan-bcny](https://forums.swift.org/u/kellychan-bcny)\ **Replies:** 5\ **Last updated:** [October 28, 2026, 3:01pm UTC](https://forums.swift.org/t/biweekly-windows-workgroup-agenda-notes/89334 "2026-10-28T15:01:43Z")
The Windows Workgroup meets every 2 weeks, 12:00–1:00pm ET (message @compnerd to be added to calendar invite) Feel free to reference the week's agenda ahead of each call: Windows Workgroup Agendas Any added agenda item… --- ## [About the Windows category](https://forums.swift.org/t/about-the-windows-category/40508)
**Author:** [@mishal\_shah](https://forums.swift.org/u/mishal_shah)\ **Replies:** 6\ **Last updated:** [September 25, 2020, 9:48pm UTC](https://forums.swift.org/t/about-the-windows-category/40508 "2020-09-25T21:48:48Z")
For Developers to discuss the implementation of Swift on Windows. --- ## [Pitch: A vision for COM Interoperability in Swift](https://forums.swift.org/t/pitch-a-vision-for-com-interoperability-in-swift/86049)
**Author:** [@compnerd](https://forums.swift.org/u/compnerd)\ **Replies:** 82\ **Last updated:** [November 9, 2026, 3:52pm UTC](https://forums.swift.org/t/pitch-a-vision-for-com-interoperability-in-swift/86049 "2026-11-09T15:52:38Z")
Hello All, One thing that has often been discussed is the idea of a bi-directional COM interop for Swift. I think that we are finally at a point where we can consider what such a deisgn would look like. I'd like to kick… --- ## [\[Pitch\] Bringing Swiftly to Windows](https://forums.swift.org/t/pitch-bringing-swiftly-to-windows/90287)
**Author:** [@AbdoGad](https://forums.swift.org/u/AbdoGad)\ **Replies:** 1\ **Last updated:** [October 29, 2026, 5:56am UTC](https://forums.swift.org/t/pitch-bringing-swiftly-to-windows/90287 "2026-10-29T05:56:29Z")
Motivation Installing Swift on Windows today means downloading an installer from swift.org and running it. That works for one toolchain, but anyone who needs a second version, say to test a package against 6.1 and 6.2, o… --- ## [Developer main unable to build packages](https://forums.swift.org/t/developer-main-unable-to-build-packages/90224)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 2\ **Last updated:** [October 23, 2026, 8:05pm UTC](https://forums.swift.org/t/developer-main-unable-to-build-packages/90224 "2026-10-23T20:05:49Z")
Hello, I raised Unable to build SwiftPM due to \`error: could not build module '\_Builtin\_intrinsics'\` · Issue #586 · swiftlang/swift-installer-scripts · GitHub a few days ago as I'm unable to use the EXE installer to bui… --- ## [GitHub Project Board Access](https://forums.swift.org/t/github-project-board-access/89087)
**Author:** [@kellychan-bcny](https://forums.swift.org/u/kellychan-bcny)\ **Replies:** 8\ **Last updated:** [September 30, 2026, 3:53pm UTC](https://forums.swift.org/t/github-project-board-access/89087 "2026-09-30T15:53:42Z")
Hi @mishal\_shah! I'm Kelly, the new TPM on the BCNY Toolchains, working alongside @compnerd and the rest of the Swift on Windows crew. I have two access requests I'm hoping you can help with (or point me to the right pe… --- ## [Exploring Windows Support for Swiftly](https://forums.swift.org/t/exploring-windows-support-for-swiftly/89742)
**Author:** [@kellychan-bcny](https://forums.swift.org/u/kellychan-bcny)\ **Replies:** 3\ **Last updated:** [September 24, 2026, 11:43am UTC](https://forums.swift.org/t/exploring-windows-support-for-swiftly/89742 "2026-09-24T11:43:40Z")
A few of us have discussed exploring experimental Windows support for Swiftly. The goal would be to help Windows developers install and manage Swift toolchains, including switching between versions and using project-spe… --- ## [Windows Kit: A new Swift projection for Windows APIs](https://forums.swift.org/t/windows-kit-a-new-swift-projection-for-windows-apis/88363)
**Author:** [@TwirlySeal](https://forums.swift.org/u/TwirlySeal)\ **Replies:** 6\ **Last updated:** [July 24, 2026, 6:01am UTC](https://forums.swift.org/t/windows-kit-a-new-swift-projection-for-windows-apis/88363 "2026-07-24T06:01:06Z")
Hi all, I would like to share an open-source project I have been working on called Windows Kit, which aims to provide a Swift language projection for both Win32 (C and COM) and WinRT APIs from the Windows SDK, Windows A… --- ## [What is needed for consumers to use my Swift-written DLL I put on NuGet?](https://forums.swift.org/t/what-is-needed-for-consumers-to-use-my-swift-written-dll-i-put-on-nuget/87411)
**Author:** [@vitamin](https://forums.swift.org/u/vitamin)\ **Replies:** 3\ **Last updated:** [June 29, 2026, 2:58pm UTC](https://forums.swift.org/t/what-is-needed-for-consumers-to-use-my-swift-written-dll-i-put-on-nuget/87411 "2026-06-29T14:58:32Z")
What is needed for consumers to use my Swift-written DLL I put on NuGet? If someone downloads my Swift-written DLL (SwiftXState 0.9.8) from NuGet and puts it in their app, what is needed for that app to launch and use t… --- ## [Swift-syntax prebuilts](https://forums.swift.org/t/swift-syntax-prebuilts/87601)
**Author:** [@mikewoodworth](https://forums.swift.org/u/mikewoodworth)\ **Replies:** 2\ **Last updated:** [June 22, 2026, 6:34pm UTC](https://forums.swift.org/t/swift-syntax-prebuilts/87601 "2026-06-22T18:34:32Z")
hello, I'm trying to improve build times on windows, and one of my biggest issues at the moment is swift syntax. It seems there was one manifest (6.1) that included windows and linux, but since then they only include ar… --- ## [Swift Windows working group](https://forums.swift.org/t/swift-windows-working-group/80691)
**Author:** [@clarkezone](https://forums.swift.org/u/clarkezone)\ **Replies:** 20\ **Last updated:** [May 21, 2026, 5:53am UTC](https://forums.swift.org/t/swift-windows-working-group/80691 "2026-05-21T05:53:56Z")
It was great to see the announcement of the Swift on Android working group. Is there any interest / activity in setting up something similar for Windows? --- ## [Design Notes: COM Interoperability](https://forums.swift.org/t/design-notes-com-interoperability/86131)
**Author:** [@compnerd](https://forums.swift.org/u/compnerd)\ **Replies:** 0\ **Last updated:** [April 20, 2026, 6:00pm UTC](https://forums.swift.org/t/design-notes-com-interoperability/86131 "2026-04-20T18:00:51Z")
Since the discussion on the COM vision seems to veer into the details, I'm attaching some design notes on the COM interoperability and how we might be able to design it in more depth. This will need to be split up into a… --- ## [SwiftPM plugin doesn't work with the latest Visual Studio version](https://forums.swift.org/t/swiftpm-plugin-doesnt-work-with-the-latest-visual-studio-version/78183)
**Author:** [@yuyoyuppe](https://forums.swift.org/u/yuyoyuppe)\ **Replies:** 15\ **Last updated:** [April 2, 2026, 8:50am UTC](https://forums.swift.org/t/swiftpm-plugin-doesnt-work-with-the-latest-visual-studio-version/78183 "2026-04-02T08:50:32Z")
We have been happily compiling Swift executables and compiler plugins on Windows before for a while, however the latest Visual Studio update broke our build pipeline. I've been able to reduce the issue to the minimal re… --- ## [Introducing Windows Office Hours!](https://forums.swift.org/t/introducing-windows-office-hours/82078)
**Author:** [@compnerd](https://forums.swift.org/u/compnerd)\ **Replies:** 4\ **Last updated:** [March 27, 2026, 3:01am UTC](https://forums.swift.org/t/introducing-windows-office-hours/82078 "2026-03-27T03:01:44Z")
Hello Windows Developers! There has been a significant amount of interest in Windows Swift development for both developing applications as well as interest from potential contributors to the toolchain. I'm excited to… --- ## [CMake, Swift-Syntax and Windows](https://forums.swift.org/t/cmake-swift-syntax-and-windows/85027)
**Author:** [@zaph](https://forums.swift.org/u/zaph)\ **Replies:** 4\ **Last updated:** [March 4, 2026, 12:03am UTC](https://forums.swift.org/t/cmake-swift-syntax-and-windows/85027 "2026-03-04T00:03:15Z")
I've been adding cmake support to qtbridge-swift with this commit. It works perfectly fine on macOS and linux. I suspect it'd be relatively trivial to get it to work on other platforms that support c++ interop. Apart fro… --- ## [Help needed: Build error](https://forums.swift.org/t/help-needed-build-error/85095)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 0\ **Last updated:** [March 2, 2026, 3:54pm UTC](https://forums.swift.org/t/help-needed-build-error/85095 "2026-03-02T15:54:33Z")
Hello, I have a draft PR in SwiftPM where I am making the SwiftBuild the default build system. The Windows Platform CI build is failing and I'm unsure how to fix this. \[2026-02-28 09:16:57\] Building 'C:\\Users\\swift-c… --- ## [How to pass collection type parameter to swift-winrt projected winui API?](https://forums.swift.org/t/how-to-pass-collection-type-parameter-to-swift-winrt-projected-winui-api/84065)
**Author:** [@rayman-zhao](https://forums.swift.org/u/rayman-zhao)\ **Replies:** 1\ **Last updated:** [January 23, 2026, 8:06am UTC](https://forums.swift.org/t/how-to-pass-collection-type-parameter-to-swift-winrt-projected-winui-api/84065 "2026-01-23T08:06:32Z")
For example, there is ItemsSource property in ItemsControl, declared in C++/WinRT : IInspectable ItemsSource(); void ItemsSource(IInspectable value); //The type of the object that you set the ItemsSource property to m… --- ## [Help: Error building Windows toolchain at desk](https://forums.swift.org/t/help-error-building-windows-toolchain-at-desk/84296)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 1\ **Last updated:** [January 22, 2026, 3:43pm UTC](https://forums.swift.org/t/help-error-building-windows-toolchain-at-desk/84296 "2026-01-22T15:43:39Z")
Hello, I'm trying to build the Swift PM Windows CI build for the very first time and I'm encountering errors. I want to follow the same steps as the CI build. I basically ran the following set CMAKE\_BUILD\_TYPE=Release… --- ## [Help needed with Windows CI build failure](https://forums.swift.org/t/help-needed-with-windows-ci-build-failure/84280)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 4\ **Last updated:** [January 21, 2026, 9:44pm UTC](https://forums.swift.org/t/help-needed-with-windows-ci-build-failure/84280 "2026-01-21T21:44:40Z")
Hello, The Windows Platform build on \[DNM\]: SBOM (Software Bill of Materials) generation support by echeng3805 · Pull Request #9577 · swiftlang/swift-package-manager · GitHub is failing with the following error: FAILED… --- ## [Building toolchain on Windows issues](https://forums.swift.org/t/building-toolchain-on-windows-issues/84215)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 0\ **Last updated:** [January 19, 2026, 3:47pm UTC](https://forums.swift.org/t/building-toolchain-on-windows-issues/84215 "2026-01-19T15:47:05Z")
Hello, I'm trying to perform a toolchain build on Windows by following the Building Swift on Windows documentation, however I believe my computer is not setup properly as Cmake and Ninja are not found on the Path. I ha… --- ## [Toolchain Installation with Chocolatey](https://forums.swift.org/t/toolchain-installation-with-chocolatey/84191)
**Author:** [@SimplyDanny](https://forums.swift.org/u/SimplyDanny)\ **Replies:** 1\ **Last updated:** [January 17, 2026, 4:13pm UTC](https://forums.swift.org/t/toolchain-installation-with-chocolatey/84191 "2026-01-17T16:13:39Z")
Chocolatey is a Package Manager for Windows applications that has been around for much longer (~9 years) than WinGet. For that reason and its extensive package catalog, it's widely used and often the preferred alternativ… --- ## [Windows CI failure on PR targeting \`release/6.3\`](https://forums.swift.org/t/windows-ci-failure-on-pr-targeting-release-6-3/84081)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 3\ **Last updated:** [January 12, 2026, 5:14pm UTC](https://forums.swift.org/t/windows-ci-failure-on-pr-targeting-release-6-3/84081 "2026-01-12T17:14:06Z")
Hello, I am encountering the following error on the Windows PR builds in my PR that is up versioning swift-argument-parser (targeting release/6.3). I'm not familiar with how to fix this error, especially considering th… --- ## [Failed to Install Visual Studio Code](https://forums.swift.org/t/failed-to-install-visual-studio-code/83935)
**Author:** [@hryde](https://forums.swift.org/u/hryde)\ **Replies:** 1\ **Last updated:** [January 4, 2026, 9:01am UTC](https://forums.swift.org/t/failed-to-install-visual-studio-code/83935 "2026-01-04T09:01:01Z")
I recently posted an announcement about An Introduction to Programming Using Swift (see An Introduction to Programming Using Swift). Someone responded with a suggestion concerning installation of Swift under Windows and … --- ## [What failed in CI build?](https://forums.swift.org/t/what-failed-in-ci-build/83733)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 9\ **Last updated:** [December 18, 2025, 3:36am UTC](https://forums.swift.org/t/what-failed-in-ci-build/83733 "2025-12-18T03:36:36Z")
Hello, I have a SwiftPM PR that is blocking two other PR targeting release/6.3. However, Windows Platform build failed on the CI failed and I'm unable to determine the reason. Looks like there is a similar failure o… --- ## [Swift-bundled Clang fails to build against Windows' \`#include \\`](https://forums.swift.org/t/swift-bundled-clang-fails-to-build-against-windows-include-memory/83711)
**Author:** [@Joannis\_Orlandos](https://forums.swift.org/u/Joannis_Orlandos)\ **Replies:** 1\ **Last updated:** [December 15, 2025, 3:20pm UTC](https://forums.swift.org/t/swift-bundled-clang-fails-to-build-against-windows-include-memory/83711 "2025-12-15T15:20:48Z")
Related issue: clang-cl and Windows headers define conflicting versions of \_m\_prefetchw · Issue #87515 · llvm/llvm-project · GitHub While trying to build out CI for SwiftNIO(-based) projects I ran into this issue on Git… --- ## [Strict Memory Safety on Windows](https://forums.swift.org/t/strict-memory-safety-on-windows/83699)
**Author:** [@0xTim](https://forums.swift.org/u/0xTim)\ **Replies:** 0\ **Last updated:** [December 13, 2025, 5:55pm UTC](https://forums.swift.org/t/strict-memory-safety-on-windows/83699 "2025-12-13T17:55:37Z")
I’m working with some of the new strict memory checking APIs to write safer code when interacting with C code, such as converting some of the UnsafeMutablePointer APIs to use MutableSpan. This all works well, but looks l… --- ## [Windows setup failures](https://forums.swift.org/t/windows-setup-failures/83660)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 1\ **Last updated:** [December 10, 2025, 7:37pm UTC](https://forums.swift.org/t/windows-setup-failures/83660 "2025-12-10T19:37:59Z")
Hello, I'm configured a Windows 11 VM running in Parallels Desktop in on macOS. When following the instructions on Swift.org, I encounter the following error PS C:\\Mac\\Home\\Documents\\git\\public\\swiftlang\\swift-build\> … --- ## [Upcoming changes to Windows Swift SDKs](https://forums.swift.org/t/upcoming-changes-to-windows-swift-sdks/81313)
**Author:** [@compnerd](https://forums.swift.org/u/compnerd)\ **Replies:** 42\ **Last updated:** [November 10, 2025, 7:17pm UTC](https://forums.swift.org/t/upcoming-changes-to-windows-swift-sdks/81313 "2025-11-10T19:17:14Z")
Hello Windows Developers, This post has two aims: To notify users of a significant upcoming change. To recruit additional early testers. Over the past few months, there’s been quiet but substantial progress on improv… --- ## [Latest (Oct 2, 2025) Windows nightly toolchain DOA?](https://forums.swift.org/t/latest-oct-2-2025-windows-nightly-toolchain-doa/82977)
**Author:** [@bkhouri](https://forums.swift.org/u/bkhouri)\ **Replies:** 6\ **Last updated:** [November 5, 2025, 5:32pm UTC](https://forums.swift.org/t/latest-oct-2-2025-windows-nightly-toolchain-doa/82977 "2025-11-05T17:32:49Z")
Hello, I don't know where else to post this, but I installed the latest main nightly Swift Windows toolchain (October 2, 2025) and there appears to be an issue with the toolchain's command line PS C:\\Users\\jenkins\> swi… --- ## [Adding API Notes](https://forums.swift.org/t/adding-api-notes/82914)
**Author:** [@timsneath](https://forums.swift.org/u/timsneath)\ **Replies:** 3\ **Last updated:** [October 29, 2025, 8:56pm UTC](https://forums.swift.org/t/adding-api-notes/82914 "2025-10-29T20:56:04Z")
I’m experimenting with improving the default WinSDK projection, but I’m having a hard time getting API notes recognized by the compiler. I’ve created a proof-of-concept file that disables a couple of things, just to tes… [Next page](https://forums.swift.org/c/platform/windows/67.md?page=1)