From cd6f0199fac01b15589db9313ac681f839896ef9 Mon Sep 17 00:00:00 2001
From: Aleksei Nosachev <11856987+nos1609@users.noreply.github.com>
Date: Wed, 9 Sep 2026 21:32:13 +0300
Subject: [PATCH] Fix Windows ARM64 platform signature for Spotify Access Point

librespot reports Windows ARM/ARM64 as Windows CE ARM in the Access Point handshake. Report these clients as the Win32 x86_64 desktop platform and CPU family instead, while preserving the existing mappings for other operating systems.

Add the corresponding entry to the Unreleased changelog.

References librespot-org/librespot#1737 and crmne/fastpotify#123.
---
 CHANGELOG.md                     | 1 +
 core/src/connection/handshake.rs | 3 +--
 core/src/connection/mod.rs       | 3 ++-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f39ea3cd..59c29a03a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [audio] Fixed integer overflow in throughput calculation
 - [main] Fixed `--volume-ctrl fixed` not disabling volume control
 - [core] Fix default permissions on credentials file and warn user if file is world readable
+- [core] Report Windows ARM/ARM64 as Win32 x86_64 to avoid Access Point authentication rejection
 - [core] Try all resolved addresses for the dealer connection instead of failing after the first one.
 - [audio] Try the next CDN URL when a fetch returns a non-206 status instead of only retrying on transport errors, fixing playback failures when the first CDN URL is reachable but does not stream audio.
 
diff --git a/core/src/connection/handshake.rs b/core/src/connection/handshake.rs
index 1dea18acb..16ffcf0d0 100644
--- a/core/src/connection/handshake.rs
+++ b/core/src/connection/handshake.rs
@@ -138,8 +138,7 @@ where
             _ => Platform::PLATFORM_OSX_X86,
         },
         "windows" => match ARCH {
-            "arm" | "aarch64" => Platform::PLATFORM_WINDOWS_CE_ARM,
-            "x86_64" => Platform::PLATFORM_WIN32_X86_64,
+            "arm" | "aarch64" | "x86_64" => Platform::PLATFORM_WIN32_X86_64,
             _ => Platform::PLATFORM_WIN32_X86,
         },
         _ => Platform::PLATFORM_LINUX_X86,
diff --git a/core/src/connection/mod.rs b/core/src/connection/mod.rs
index 83017189c..b01a0314b 100644
--- a/core/src/connection/mod.rs
+++ b/core/src/connection/mod.rs
@@ -104,7 +104,6 @@ pub async fn authenticate(
 
     let cpu_family = match std::env::consts::ARCH {
         "blackfin" => CpuFamily::CPU_BLACKFIN,
-        "arm" | "aarch64" => CpuFamily::CPU_ARM,
         "ia64" => CpuFamily::CPU_IA64,
         "mips" => CpuFamily::CPU_MIPS,
         "ppc" => CpuFamily::CPU_PPC,
@@ -112,6 +111,8 @@ pub async fn authenticate(
         "sh" => CpuFamily::CPU_SH,
         "x86" => CpuFamily::CPU_X86,
         "x86_64" => CpuFamily::CPU_X86_64,
+        "arm" | "aarch64" if crate::config::OS == "windows" => CpuFamily::CPU_X86_64,
+        "arm" | "aarch64" => CpuFamily::CPU_ARM,
         _ => CpuFamily::CPU_UNKNOWN,
     };