diff --git a/electron/gateway/clawhub.ts b/electron/gateway/clawhub.ts
index 2a40372ed..cbb7912eb 100644
--- a/electron/gateway/clawhub.ts
+++ b/electron/gateway/clawhub.ts
@@ -6,7 +6,7 @@ import { spawn } from 'child_process';
 import fs from 'fs';
 import path from 'path';
 import { app, shell } from 'electron';
-import { getOpenClawConfigDir, ensureDir, getClawHubCliBinPath, getClawHubCliEntryPath } from '../utils/paths';
+import { getOpenClawConfigDir, ensureDir, getClawHubCliBinPath, getClawHubCliEntryPath, quoteForCmd } from '../utils/paths';
 
 export interface ClawHubSearchParams {
     query: string;
@@ -87,17 +87,20 @@ export class ClawHubService {
             console.log(`Running ClawHub command: ${displayCommand}`);
 
             const isWin = process.platform === 'win32';
+            const useShell = isWin && !this.useNodeRunner;
             const env = {
                 ...process.env,
                 CI: 'true',
-                FORCE_COLOR: '0', // Disable colors for easier parsing
+                FORCE_COLOR: '0',
             };
             if (this.useNodeRunner) {
                 env.ELECTRON_RUN_AS_NODE = '1';
             }
-            const child = spawn(this.cliPath, commandArgs, {
+            const spawnCmd = useShell ? quoteForCmd(this.cliPath) : this.cliPath;
+            const spawnArgs = useShell ? commandArgs.map(a => quoteForCmd(a)) : commandArgs;
+            const child = spawn(spawnCmd, spawnArgs, {
                 cwd: this.workDir,
-                shell: isWin && !this.useNodeRunner,
+                shell: useShell,
                 env: {
                     ...env,
                     CLAWHUB_WORKDIR: this.workDir,
diff --git a/electron/gateway/manager.ts b/electron/gateway/manager.ts
index 9caf4d5a2..18340a736 100644
--- a/electron/gateway/manager.ts
+++ b/electron/gateway/manager.ts
@@ -13,7 +13,8 @@ import {
   getOpenClawDir, 
   getOpenClawEntryPath, 
   isOpenClawBuilt, 
-  isOpenClawPresent 
+  isOpenClawPresent,
+  quoteForCmd,
 } from '../utils/paths';
 import { getSetting } from '../utils/store';
 import { getApiKey, getDefaultProvider, getProvider } from '../utils/secure-storage';
@@ -755,11 +756,15 @@ export class GatewayManager extends EventEmitter {
         }
       }
 
-      this.process = spawn(command, args, {
+      const useShell = !app.isPackaged && process.platform === 'win32';
+      const spawnCmd = useShell ? quoteForCmd(command) : command;
+      const spawnArgs = useShell ? args.map(a => quoteForCmd(a)) : args;
+
+      this.process = spawn(spawnCmd, spawnArgs, {
         cwd: openclawDir,
         stdio: ['ignore', 'pipe', 'pipe'],
         detached: false,
-        shell: !app.isPackaged && process.platform === 'win32', // shell only in dev on Windows
+        shell: useShell,
         env: spawnEnv,
       });
       const child = this.process;
diff --git a/electron/utils/paths.ts b/electron/utils/paths.ts
index c29792897..8126bb5b4 100644
--- a/electron/utils/paths.ts
+++ b/electron/utils/paths.ts
@@ -8,6 +8,8 @@ import { homedir } from 'os';
 import { existsSync, mkdirSync, readFileSync, realpathSync } from 'fs';
 import { logger } from './logger';
 
+export { quoteForCmd, needsWinShell, prepareWinSpawn } from './win-shell';
+
 /**
  * Expand ~ to home directory
  */
diff --git a/electron/utils/uv-setup.ts b/electron/utils/uv-setup.ts
index b20cb3fd9..c16fcd951 100644
--- a/electron/utils/uv-setup.ts
+++ b/electron/utils/uv-setup.ts
@@ -4,6 +4,7 @@ import { existsSync } from 'fs';
 import { join } from 'path';
 import { getUvMirrorEnv } from './uv-env';
 import { logger } from './logger';
+import { quoteForCmd, needsWinShell } from './paths';
 
 /**
  * Get the path to the bundled uv binary
@@ -88,11 +89,12 @@ export async function installUv(): Promise<void> {
  */
 export async function isPythonReady(): Promise<boolean> {
   const { bin: uvBin } = resolveUvBin();
+  const useShell = needsWinShell(uvBin);
 
   return new Promise<boolean>((resolve) => {
     try {
-      const child = spawn(uvBin, ['python', 'find', '3.12'], {
-        shell: process.platform === 'win32',
+      const child = spawn(useShell ? quoteForCmd(uvBin) : uvBin, ['python', 'find', '3.12'], {
+        shell: useShell,
       });
       child.on('close', (code) => resolve(code === 0));
       child.on('error', () => resolve(false));
@@ -111,12 +113,13 @@ async function runPythonInstall(
   env: Record<string, string | undefined>,
   label: string,
 ): Promise<void> {
+  const useShell = needsWinShell(uvBin);
   return new Promise<void>((resolve, reject) => {
     const stderrChunks: string[] = [];
     const stdoutChunks: string[] = [];
 
-    const child = spawn(uvBin, ['python', 'install', '3.12'], {
-      shell: process.platform === 'win32',
+    const child = spawn(useShell ? quoteForCmd(uvBin) : uvBin, ['python', 'install', '3.12'], {
+      shell: useShell,
       env,
     });
 
@@ -201,10 +204,11 @@ export async function setupManagedPython(): Promise<void> {
   }
 
   // After installation, verify and log the Python path
+  const verifyShell = needsWinShell(uvBin);
   try {
     const findPath = await new Promise<string>((resolve) => {
-      const child = spawn(uvBin, ['python', 'find', '3.12'], {
-        shell: process.platform === 'win32',
+      const child = spawn(verifyShell ? quoteForCmd(uvBin) : uvBin, ['python', 'find', '3.12'], {
+        shell: verifyShell,
         env: { ...process.env, ...uvEnv },
       });
       let output = '';
diff --git a/electron/utils/win-shell.ts b/electron/utils/win-shell.ts
new file mode 100644
index 000000000..ea845a0b4
--- /dev/null
+++ b/electron/utils/win-shell.ts
@@ -0,0 +1,65 @@
+/**
+ * Windows shell quoting utilities for child_process.spawn().
+ *
+ * When spawn() is called with `shell: true` on Windows, the command and
+ * arguments are concatenated and passed to cmd.exe. Paths containing spaces
+ * must be wrapped in double-quotes to prevent cmd.exe from splitting them
+ * into separate tokens.
+ *
+ * This module is intentionally dependency-free so it can be unit-tested
+ * without mocking Electron.
+ */
+import path from 'path';
+
+/**
+ * Quote a path/value for safe use with Windows cmd.exe (shell: true in spawn).
+ *
+ * When Node.js spawn is called with `shell: true` on Windows, cmd.exe
+ * interprets spaces as argument separators. Wrapping the value in double
+ * quotes prevents this. On non-Windows platforms the value is returned
+ * unchanged so this function can be called unconditionally.
+ */
+export function quoteForCmd(value: string): string {
+  if (process.platform !== 'win32') return value;
+  if (!value.includes(' ')) return value;
+  if (value.startsWith('"') && value.endsWith('"')) return value;
+  return `"${value}"`;
+}
+
+/**
+ * Determine whether a spawn call needs `shell: true` on Windows.
+ *
+ * Full (absolute) paths can be executed directly by the OS via
+ * CreateProcessW, which handles spaces correctly without a shell.
+ * Simple command names (e.g. 'uv', 'node') need shell for PATH/PATHEXT
+ * resolution on Windows.
+ */
+export function needsWinShell(bin: string): boolean {
+  if (process.platform !== 'win32') return false;
+  return !path.win32.isAbsolute(bin);
+}
+
+/**
+ * Prepare command and args for spawn(), handling Windows paths with spaces.
+ *
+ * Returns the shell option, the (possibly quoted) command, and the
+ * (possibly quoted) args array ready for child_process.spawn().
+ */
+export function prepareWinSpawn(
+  command: string,
+  args: string[],
+  forceShell?: boolean,
+): { shell: boolean; command: string; args: string[] } {
+  const isWin = process.platform === 'win32';
+  const useShell = forceShell ?? (isWin && !path.win32.isAbsolute(command));
+
+  if (!useShell || !isWin) {
+    return { shell: useShell, command, args };
+  }
+
+  return {
+    shell: true,
+    command: quoteForCmd(command),
+    args: args.map(a => quoteForCmd(a)),
+  };
+}
diff --git a/scripts/download-bundled-uv.mjs b/scripts/download-bundled-uv.mjs
index eb655d93f..8ab90ae45 100644
--- a/scripts/download-bundled-uv.mjs
+++ b/scripts/download-bundled-uv.mjs
@@ -74,10 +74,9 @@ async function setupTarget(id) {
     echo`📂 Extracting...`;
     if (target.filename.endsWith('.zip')) {
       if (os.platform() === 'win32') {
-        // Use .NET Framework for ZIP extraction (more reliable than Expand-Archive)
-        const { execSync } = await import('child_process');
+        const { execFileSync } = await import('child_process');
         const psCommand = `Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory('${archivePath.replace(/'/g, "''")}', '${tempDir.replace(/'/g, "''")}')`;
-        execSync(`powershell.exe -NoProfile -Command "${psCommand}"`, { stdio: 'inherit' });
+        execFileSync('powershell.exe', ['-NoProfile', '-Command', psCommand], { stdio: 'inherit' });
       } else {
         await $`unzip -q -o ${archivePath} -d ${tempDir}`;
       }
diff --git a/tests/unit/win-shell.test.ts b/tests/unit/win-shell.test.ts
new file mode 100644
index 000000000..3aa48538d
--- /dev/null
+++ b/tests/unit/win-shell.test.ts
@@ -0,0 +1,162 @@
+/**
+ * Windows shell quoting utilities tests
+ */
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+
+// We test the pure functions directly by dynamically importing after
+// patching process.platform, since the functions check it at call time.
+const originalPlatform = process.platform;
+
+function setPlatform(platform: string) {
+  Object.defineProperty(process, 'platform', { value: platform, writable: true });
+}
+
+afterEach(() => {
+  Object.defineProperty(process, 'platform', { value: originalPlatform, writable: true });
+});
+
+describe('quoteForCmd', () => {
+  let quoteForCmd: (value: string) => string;
+
+  beforeEach(async () => {
+    const mod = await import('@electron/utils/win-shell');
+    quoteForCmd = mod.quoteForCmd;
+  });
+
+  it('returns value unchanged on non-Windows', () => {
+    setPlatform('linux');
+    expect(quoteForCmd('C:\\Program Files\\uv.exe')).toBe('C:\\Program Files\\uv.exe');
+  });
+
+  it('returns value unchanged on macOS', () => {
+    setPlatform('darwin');
+    expect(quoteForCmd('/Applications/My App/bin')).toBe('/Applications/My App/bin');
+  });
+
+  it('returns value unchanged on Windows when no spaces', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('C:\\tools\\uv.exe')).toBe('C:\\tools\\uv.exe');
+  });
+
+  it('wraps in double quotes on Windows when path has spaces', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('C:\\Program Files\\uv.exe')).toBe('"C:\\Program Files\\uv.exe"');
+  });
+
+  it('wraps user home paths with spaces', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('C:\\Users\\John Doe\\AppData\\Local\\uv.exe'))
+      .toBe('"C:\\Users\\John Doe\\AppData\\Local\\uv.exe"');
+  });
+
+  it('does not double-quote already quoted values', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('"C:\\Program Files\\uv.exe"')).toBe('"C:\\Program Files\\uv.exe"');
+  });
+
+  it('handles simple command names without spaces', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('uv')).toBe('uv');
+    expect(quoteForCmd('node')).toBe('node');
+    expect(quoteForCmd('pnpm')).toBe('pnpm');
+  });
+
+  it('handles empty string', () => {
+    setPlatform('win32');
+    expect(quoteForCmd('')).toBe('');
+  });
+});
+
+describe('needsWinShell', () => {
+  let needsWinShell: (bin: string) => boolean;
+
+  beforeEach(async () => {
+    const mod = await import('@electron/utils/win-shell');
+    needsWinShell = mod.needsWinShell;
+  });
+
+  it('returns false on non-Windows', () => {
+    setPlatform('linux');
+    expect(needsWinShell('uv')).toBe(false);
+    expect(needsWinShell('/usr/bin/uv')).toBe(false);
+  });
+
+  it('returns true on Windows for simple command names', () => {
+    setPlatform('win32');
+    expect(needsWinShell('uv')).toBe(true);
+    expect(needsWinShell('node')).toBe(true);
+    expect(needsWinShell('pnpm')).toBe(true);
+  });
+
+  it('returns false on Windows for absolute paths', () => {
+    setPlatform('win32');
+    expect(needsWinShell('C:\\Program Files\\uv.exe')).toBe(false);
+    expect(needsWinShell('D:\\tools\\bin\\uv.exe')).toBe(false);
+  });
+
+  it('returns true on Windows for relative paths', () => {
+    setPlatform('win32');
+    expect(needsWinShell('bin\\uv.exe')).toBe(true);
+    expect(needsWinShell('.\\uv.exe')).toBe(true);
+  });
+});
+
+describe('prepareWinSpawn', () => {
+  let prepareWinSpawn: (
+    command: string,
+    args: string[],
+    forceShell?: boolean,
+  ) => { shell: boolean; command: string; args: string[] };
+
+  beforeEach(async () => {
+    const mod = await import('@electron/utils/win-shell');
+    prepareWinSpawn = mod.prepareWinSpawn;
+  });
+
+  it('does not quote on non-Windows', () => {
+    setPlatform('linux');
+    const result = prepareWinSpawn('/usr/bin/uv', ['python', 'install', '3.12']);
+    expect(result.shell).toBe(false);
+    expect(result.command).toBe('/usr/bin/uv');
+    expect(result.args).toEqual(['python', 'install', '3.12']);
+  });
+
+  it('quotes command and args with spaces on Windows with shell', () => {
+    setPlatform('win32');
+    const result = prepareWinSpawn(
+      'C:\\Program Files\\uv.exe',
+      ['python', 'install', '3.12'],
+      true,
+    );
+    expect(result.shell).toBe(true);
+    expect(result.command).toBe('"C:\\Program Files\\uv.exe"');
+    expect(result.args).toEqual(['python', 'install', '3.12']);
+  });
+
+  it('quotes args that contain spaces on Windows with shell', () => {
+    setPlatform('win32');
+    const result = prepareWinSpawn(
+      'node',
+      ['C:\\Users\\John Doe\\script.js', '--port', '18789'],
+      true,
+    );
+    expect(result.shell).toBe(true);
+    expect(result.command).toBe('node');
+    expect(result.args).toEqual(['"C:\\Users\\John Doe\\script.js"', '--port', '18789']);
+  });
+
+  it('auto-detects shell need based on absolute path on Windows', () => {
+    setPlatform('win32');
+    const absResult = prepareWinSpawn(
+      'C:\\tools\\uv.exe',
+      ['python', 'find', '3.12'],
+    );
+    expect(absResult.shell).toBe(false);
+
+    const relResult = prepareWinSpawn(
+      'uv',
+      ['python', 'find', '3.12'],
+    );
+    expect(relResult.shell).toBe(true);
+  });
+});