diff --git a/common/changes/@microsoft/rush/octogonz-rush-stdin-hang_2026-01-29-03-43.json b/common/changes/@microsoft/rush/octogonz-rush-stdin-hang_2026-01-29-03-43.json
new file mode 100644
index 0000000000..f597b7613d
--- /dev/null
+++ b/common/changes/@microsoft/rush/octogonz-rush-stdin-hang_2026-01-29-03-43.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "Fix a longstanding issue where a package.json script could hang on Windows if it accessed STDIN under certain circumstances",
+      "type": "none"
+    }
+  ],
+  "packageName": "@microsoft/rush"
+}
\ No newline at end of file
diff --git a/libraries/rush-lib/src/utilities/Utilities.ts b/libraries/rush-lib/src/utilities/Utilities.ts
index 6c502224ef..6fb93957f3 100644
--- a/libraries/rush-lib/src/utilities/Utilities.ts
+++ b/libraries/rush-lib/src/utilities/Utilities.ts
@@ -687,7 +687,7 @@ export class Utilities {
       }
     });
 
-    const stdio: child_process.StdioOptions = handleOutput ? ['pipe', 'pipe', 'pipe'] : [0, 1, 2];
+    const stdio: child_process.StdioOptions = handleOutput ? ['ignore', 'pipe', 'pipe'] : [0, 1, 2];
     if (ipc) {
       stdio.push('ipc');
     }