From 25343af8e715aa47909def75be1dd3bae2d944b5 Mon Sep 17 00:00:00 2001
From: "zhanghang.heal" <zhanghang.heal@bytedance.com>
Date: Mon, 20 Oct 2025 19:22:14 +0800
Subject: [PATCH] fix(runtime-core): register share if not registered

---
 .changeset/friendly-oranges-drop.md       | 5 +++++
 packages/runtime-core/src/shared/index.ts | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/friendly-oranges-drop.md

diff --git a/.changeset/friendly-oranges-drop.md b/.changeset/friendly-oranges-drop.md
new file mode 100644
index 00000000000..a0ce319237a
--- /dev/null
+++ b/.changeset/friendly-oranges-drop.md
@@ -0,0 +1,5 @@
+---
+'@module-federation/runtime-core': patch
+---
+
+fix(runtime-core): register share if not registered
diff --git a/packages/runtime-core/src/shared/index.ts b/packages/runtime-core/src/shared/index.ts
index a1c24b6ce2a..606f9c5e55d 100644
--- a/packages/runtime-core/src/shared/index.ts
+++ b/packages/runtime-core/src/shared/index.ts
@@ -89,7 +89,7 @@ export class SharedHandler {
           sharedVal,
           this.hooks.lifecycle.resolveShare,
         );
-        if (!registeredShared && sharedVal && sharedVal.lib) {
+        if (!registeredShared) {
           this.setShared({
             pkgName: sharedKey,
             lib: sharedVal.lib,