diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index c840c1b7ea..1b6210283d 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -1021,15 +1021,6 @@ declare namespace Office {
          * - Called from a module extension: No effect.
          */
         closeContainer(): void;
-        /**
-         * For internal Microsoft use only. Do not call from your code. Opens a browser window and loads the specified URL.
-         * 
-         * @remarks
-         * <table><tr><td>Requirement sets</td><td>OpenBrowserWindowAPI 1.1</td></tr></table>
-         * 
-         * @param url The full URL to be opened including protocol (e.g., https), and port number, if any.
-         */
-        openBrowserWindow(url: string): void;
     }
 
     /**