diff --git a/.chronus/changes/fix-install-shell-2024-5-5-16-51-0.md b/.chronus/changes/fix-install-shell-2024-5-5-16-51-0.md
new file mode 100644
index 0000000000..c4463be4fc
--- /dev/null
+++ b/.chronus/changes/fix-install-shell-2024-5-5-16-51-0.md
@@ -0,0 +1,8 @@
+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: fix
+packages:
+  - "@typespec/compiler"
+---
+
+Fix EINVAL error when running `tsp code install`
diff --git a/packages/compiler/src/core/cli/utils.ts b/packages/compiler/src/core/cli/utils.ts
index d1ae1666ad..7d4ada8310 100644
--- a/packages/compiler/src/core/cli/utils.ts
+++ b/packages/compiler/src/core/cli/utils.ts
@@ -86,6 +86,7 @@ export function run(
   const finalOptions: SpawnSyncOptionsWithStringEncoding = {
     encoding: "utf-8",
     stdio: "inherit",
+    shell: process.platform === "win32",
     ...(options ?? {}),
   };