diff --git a/src/main/services/OpenClawService.ts b/src/main/services/OpenClawService.ts
index 43209ab826a..cf5afb82f83 100644
--- a/src/main/services/OpenClawService.ts
+++ b/src/main/services/OpenClawService.ts
@@ -8,7 +8,7 @@ import { exec } from '@expo/sudo-prompt'
 import { loggerService } from '@logger'
 import { isLinux, isMac, isWin } from '@main/constant'
 import { isUserInChina } from '@main/utils/ipService'
-import { crossPlatformSpawn, executeCommand, findExecutableInEnv } from '@main/utils/process'
+import { crossPlatformSpawn, executeCommand, findExecutableInEnv, stripProxyEnvVars } from '@main/utils/process'
 import getShellEnv, { refreshShellEnv } from '@main/utils/shell-env'
 import type { NodeCheckResult } from '@shared/config/types'
 import { IpcChannel } from '@shared/IpcChannel'
@@ -491,9 +491,12 @@ class OpenClawService {
     let startupError: string | null = null
     let processExited = false
 
+    // Strip proxy env vars that crash OpenClaw's undici (e.g. socks5://). See #13140.
+    const gatewayEnv = { ...stripProxyEnvVars(shellEnv), OPENCLAW_CONFIG_PATH }
+
     logger.info(`Spawning gateway process: ${openclawPath} gateway --port ${this.gatewayPort}`)
     this.gatewayProcess = crossPlatformSpawn(openclawPath, ['gateway', '--port', String(this.gatewayPort)], {
-      env: { ...shellEnv, OPENCLAW_CONFIG_PATH }
+      env: gatewayEnv
     })
     logger.info(`Gateway process spawned with pid: ${this.gatewayProcess.pid}`)
 
diff --git a/src/main/services/agents/services/claudecode/index.ts b/src/main/services/agents/services/claudecode/index.ts
index 1753b6e1914..a0e7f30d645 100644
--- a/src/main/services/agents/services/claudecode/index.ts
+++ b/src/main/services/agents/services/claudecode/index.ts
@@ -19,7 +19,7 @@ import { validateModelId } from '@main/apiServer/utils'
 import { isWin } from '@main/constant'
 import { pluginService } from '@main/services/agents/plugins/PluginService'
 import { configManager } from '@main/services/ConfigManager'
-import { autoDiscoverGitBash } from '@main/utils/process'
+import { autoDiscoverGitBash, stripProxyEnvVars } from '@main/utils/process'
 import getLoginShellEnvironment from '@main/utils/shell-env'
 import { languageEnglishNameMap } from '@shared/config/languages'
 import { withoutTrailingApiVersion } from '@shared/utils'
@@ -125,9 +125,7 @@ class ClaudeCodeService implements AgentServiceInterface {
 
     const apiConfig = await apiConfigService.get()
     const loginShellEnv = await getLoginShellEnvironment()
-    const loginShellEnvWithoutProxies = Object.fromEntries(
-      Object.entries(loginShellEnv).filter(([key]) => !key.toLowerCase().endsWith('_proxy'))
-    ) as Record<string, string>
+    const loginShellEnvWithoutProxies = stripProxyEnvVars(loginShellEnv)
 
     // Auto-discover Git Bash path on Windows (already logs internally)
     const customGitBashPath = isWin ? autoDiscoverGitBash() : null
diff --git a/src/main/utils/process.ts b/src/main/utils/process.ts
index 4da7637206b..e036da37c04 100644
--- a/src/main/utils/process.ts
+++ b/src/main/utils/process.ts
@@ -667,3 +667,12 @@ export function getGitBashPathInfo(): GitBashPathInfo {
 
   return { path, source }
 }
+
+/**
+ * Strip proxy-related environment variables from an env object.
+ * Prevents child processes from inheriting proxy settings that may cause crashes
+ * (e.g. undici does not support socks5:// protocol).
+ */
+export function stripProxyEnvVars<T extends Record<string, string>>(env: T): T {
+  return Object.fromEntries(Object.entries(env).filter(([key]) => !key.toLowerCase().endsWith('_proxy'))) as T
+}