diff --git a/client_handler.cpp b/client_handler.cpp
index f835742..ee4fad6 100644
--- a/client_handler.cpp
+++ b/client_handler.cpp
@@ -1910,10 +1910,18 @@ bool ClientHandler::OnSelectClientCertificate(
 
 void ClientHandler::OnProtocolExecution(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, CefRefPtr<CefRequest> request, bool& allow_os_execution)
 {
-	// do default
-	//CefResourceRequestHandler::OnProtocolExecution(browser,frame, request,allow_os_execution);
-	//return;
+	// Using CefBrowser->StopLoad() with allow_os_execution = true causes a crash on CEF128+.
+	// https://github.com/chromiumembedded/cef/issues/3851
+	//
+	// In order to avoid the crash, specifying allow_os_execution = false on CEF128+, but 
+	// this blocks to execute applications installed in OS. E.g. Zoom application for Windows.
+	// 
+	// We should specify allow_os_execution = true after the bug on CEF128+ is fixed.
+#if CHROME_VERSION_MAJOR >= 128
+	allow_os_execution = false;
+#else
 	allow_os_execution = true;
+#endif
 	browser->StopLoad();
 }
 void ClientHandler::OnRenderViewReady(CefRefPtr<CefBrowser> browser)