Windows builds of RPCS3 return thanks to Microsoft MSVC compiler fix

Microsoft MSVC compiler bug prevented RPCS3 Windows updates for almost three months

For almost three months, new Windows builds for RPCS3, the popular PlayStation 3 emulator, were unavailable for download. Why? Microsoft’s MSVC compiler, as of version 17.14, featured a bug that made new RPCS3 builds unstable. This means that for the past few months, new builds of RPCS3 were only available for Linux and macOS.

Now, thanks to a fix introduced by elad335, new RPCS3 builds are available for Windows users. elad335 fixed a bug in RPCS3’s PPU/SPU thread code that works around Microsoft’s MSVC compiler issues. Note that the bug present within Microsoft’s compiler remains, over three months after the issue was first uncovered.

The RPCS3 Windows Builds have been re-enabled!

Lead developer elad335 has fixed a bug with how RPCS3 PPU/SPU threads use x64 CPU registers on Windows systems, which avoids the issue that started on MSVC 17.14.

This fixes the instability in Windows builds, which are now updated!

— RPCS3 (@rpcs3) September 19, 2025

So was Microsoft really the problem? If RPCS3 could fix it with new code, doesn’t the fault lie with RPCS3’s developers? Yes, and no. The RPCS3 team claims that RPCS3 and MSVC have different bugs. Microsoft’s MSVC compiler bug highlighted a problem with RPCS3. This problem has now been fixed.

Both RPCS3 and MSVC had two different bugs. The issue introduced by MSVC also highlighted the bug in RPCS3.

— RPCS3 (@rpcs3) September 19, 2025

Now, after three months, Windows users can once again download new builds of the world’s most popular PlayStation 3 emulator. If you want to download the newest builds of RPCS3, you can do so on the RPCS3 website.

You can join the discussion on the return of RPCS3 Windows builds on the OC3D Forums.