# Phasing out Julia support for 32-bit Windows

**URL:** https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912
**Category:** Internals & Design
**Created:** [July 2, 2026, 11:57pm UTC](https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912 "2026-07-02T23:57:14Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![dilumaluthge](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dilumaluthge/32/29283_2.png) [@dilumaluthge](https://discourse.julialang.org/u/dilumaluthge)
#### Post date: [July 2, 2026, 11:57pm UTC](https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912/1 "2026-07-02T23:57:14Z")

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Currently, we use the msys2 toolchain to build Julia for Windows. Unfortunately, msys2 has stopped supporting 32-bit Windows, and they are in the process of removing all of their 32-bit Windows packages. This means that in the future, we will no longer be able to use msys2 to build Julia for 32-bit Windows.

Therefore, we are planning to stop distributing official Julia release binaries for 32-bit Windows in the future. Specifically, we anticipate that Julia 1.13 will be the last minor release of Julia that has official Julia release binaries for 32-bit Windows. Users of 32-bit Windows might still be able to build Julia from source, but we can’t guarantee that such builds will continue to work.

64-bit Windows (x86\_64) will continue to be supported.

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### Author: ![xgdgsc](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/xgdgsc/32/608_2.png) [@xgdgsc](https://discourse.julialang.org/u/xgdgsc)
#### Post date: [July 3, 2026, 2:01am UTC](https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912/2 "2026-07-03T02:01:50Z")

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What about arm64 Windows?

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### Author: ![Keno](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/keno/32/285_2.png) [@Keno](https://discourse.julialang.org/u/Keno)
#### Post date: [July 3, 2026, 4:59am UTC](https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912/3 "2026-07-03T04:59:48Z")

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Julia has never worked on arm64 Windows. They sent us a test machine at one point, but it’s a fair amount of work. We also don’t have CI setup for it.

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### Author: ![Palli](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/palli/32/3380_2.png) [@Palli](https://discourse.julialang.org/u/Palli)
#### Post date: [August 6, 2026, 12:57am UTC](https://discourse.julialang.org/t/phasing-out-julia-support-for-32-bit-windows/137912/4 "2026-08-06T00:57:17Z")

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> [@xgdgsc](#):
>
> What about arm64 Windows?

At least know Prism (x86 on ARM emulation) has Tier 2 support. Prism is similar to Rosetta 2 (and I guess only for arm64).