diff --git a/editors/vscode/client/tools/lsp_helper.ts b/editors/vscode/client/tools/lsp_helper.ts
index ad31ae442715e..a3c7b27041e91 100644
--- a/editors/vscode/client/tools/lsp_helper.ts
+++ b/editors/vscode/client/tools/lsp_helper.ts
@@ -13,6 +13,7 @@ export function runExecutable(path: string, nodePath?: string, tsgolintPath?: st
     serverEnv.OXLINT_TSGOLINT_PATH = tsgolintPath;
   }
   const isNode = path.endsWith(".js") || path.endsWith(".cjs") || path.endsWith(".mjs");
+  const isWindows = process.platform === "win32";
 
   return isNode
     ? {
@@ -23,15 +24,16 @@ export function runExecutable(path: string, nodePath?: string, tsgolintPath?: st
         },
       }
     : {
-        command: path,
+        // On Windows with shell, quote the command path to handle spaces in usernames/paths
+        command: isWindows ? `"${path}"` : path,
         args: ["--lsp"],
         options: {
           // On Windows we need to run the binary in a shell to be able to execute the shell npm bin script.
           // Searching for the right `.exe` file inside `node_modules/` is not reliable as it depends on
           // the package manager used (npm, yarn, pnpm, etc) and the package version.
           // The npm bin script is a shell script that points to the actual binary.
-          // Security: We validated the userDefinedBinary in `configService.getUserServerBinPath()`.
-          shell: process.platform === "win32",
+          // Security: We validated the user defined binary path in `configService.searchBinaryPath()`.
+          shell: isWindows,
           env: serverEnv,
         },
       };
diff --git a/editors/vscode/tests/lsp_helper.spec.ts b/editors/vscode/tests/lsp_helper.spec.ts
index f2b3756209975..88d973bdc4030 100644
--- a/editors/vscode/tests/lsp_helper.spec.ts
+++ b/editors/vscode/tests/lsp_helper.spec.ts
@@ -58,4 +58,12 @@ suite('runExecutable', () => {
 
     strictEqual(result.options?.env?.PATH, '/custom/node/path:/usr/bin:/bin');
   });
+
+  test('should set path in quotes on Windows for binary executables', () => {
+    Object.defineProperty(process, 'platform', { value: 'win32' });
+
+    const result = runExecutable('C:\\Path With Spaces\\oxc-language-server');
+
+    strictEqual(result.command, '"C:\\Path With Spaces\\oxc-language-server"');
+  });
 });