PC Game Port
Windows game won't start on your Mac? What to try
Last updated: October 25, 2026
You press Play and the game doesn't appear, shows a black window, or closes after a few seconds. On a Mac, a Windows game has more reasons to fail than on a PC, but most of them are quick to rule out. Go through these in order. The steps use PC Game Port's settings, and most ideas apply to any way of running Windows games on a Mac.
1. Check it can run on a Mac at all
- Kernel-level anti-cheat (Riot Vanguard, Ricochet and similar) can't run on a Mac. Steam store pages show a notice for these. See anti-cheat on Mac.
- Disc and ISO installs aren't supported. Install the digital version from a store.
- Intel Macs aren't supported. PC Game Port needs Apple Silicon (M1 or newer).
2. Setup stops at the first step
If the welcome screen stops at "Checking Rosetta 2", your Mac is missing a free Apple component that Windows games need. An administrator of the Mac installs it once: open Terminal and run
softwareupdate --install-rosetta --agree-to-license
3. A DirectX 12 game without D3DMetal
DirectX 12 games need D3DMetal, Apple's free translator, which you download from Apple once. PC Game Port offers it the first time you press Play on a DirectX 12 game. If you chose Play Without It, the game falls back to basic support, and most new games won't run well that way. Add it in Settings → Windows → D3DMetal → Import. How to add D3DMetal.
4. A 32-bit DirectX 12 game, or a Vulkan-only game
D3DMetal runs 64-bit DirectX 12 games only, and Vulkan isn't supported yet. Many games let you pick another graphics mode in their launcher or with a launch option such as -dx11. Right-click the game → Edit → Launch options.
5. It freezes or crashes right at the start
Turn off Fast thread sync in Settings → Games. It lowers CPU use for most games, but a few freeze or crash at start with it. Try the game again with it off.
6. It's an older game
PC Game Port presents itself to games as Windows 10. Some older games check for the Windows they were made for. In Settings → Windows → Windows version, try Windows 7, or Windows XP for very old games. This applies to every game, so set it back afterwards.
Some old games ask for a low screen resolution such as 640×480 or 800×600, which Apple Silicon Macs don't offer, and close with a display-mode error. Start them in a window instead: try the launch option -windowed, or turn on windowed mode in the game's settings or config file.
7. The game ships its own DLL files
Some games, and many fan patches for old games, put their own copies of Windows files like d3d9.dll or ddraw.dll in the game folder. In Settings → Windows → DLL overrides, add the file's name and choose "Game's copy, then built-in", so the game uses its own.
8. It opens, but something's off
- Launcher text is tiny: Settings → Windows → Text and menu size → 125% or 150%.
- Alt shortcuts don't work: turn on Option key is Alt in Settings → Windows → Keyboard.
- Ctrl shortcuts: turn on Command key is Ctrl to use ⌘ as Ctrl in games.
- Slow or choppy: turn off Retina resolution, which draws up to 4× the pixels. See less heat and better battery for more.
9. Something is stuck in the background
A launcher or a crashed game can leave a process running, which can stop the next launch. Choose Tools → Stop All Windows Programs, or use the PC Game Port menu in the menu bar, then press Play again.
10. Send a report
Right-click the game → Show Log to see what it printed while starting. For help, open Tools → Error Log → Copy Report. It puts your macOS version, Mac model, settings and the recent errors on your clipboard, without your username. Subscribers can paste it into an email to support@pcgameport.com.
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