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fix: localnet macos doc #1689

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uniyalabhishek merged 1 commit into from
Mar 16, 2026
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fix: localnet macos doc #1689

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17 changes: 8 additions & 9 deletions docs/build/tools/localnet.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -49,18 +49,17 @@ docker run -it --rm -p8544-8548:8544-8548 ghcr.io/oasisprotocol/sapphire-localne
docker run -it --rm -p8544-8548:8544-8548 --platform linux/x86_64 ghcr.io/oasisprotocol/sapphire-localnet
```

:::info macOS Startup Issue on Apple Silicon
:::info Apple Silicon on macOS

On Apple Silicon Macs running macOS 26 (Tahoe) or later, the `sapphire-localnet` Docker
image may hang on startup with peer authentication errors (e.g.,
`chacha20poly1305: message authentication failed`).
Rosetta must be **enabled** in Docker Desktop for `sapphire-localnet` to work
on Apple Silicon Macs. QEMU emulation is not supported. Go to
`Settings > General > Virtual Machine Options` and verify that
"Use Rosetta for x86_64/amd64 emulation on Apple Silicon" is checked (this is
the default).

This is due to a bug in Rosetta 2's x86_64 emulation. The workaround is to
disable Rosetta in Docker Desktop settings, which makes Docker use QEMU
instead.
Make sure to pull the latest version of the image:

Go to `Settings > Virtual Machine Options` and disable
"Use Rosetta for x86/amd64 emulation on Apple Silicon".
`docker pull ghcr.io/oasisprotocol/sapphire-localnet`

:::

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