diff --git a/src/defaultSettings.js b/src/defaultSettings.js
index 4e7e8018..25887b8b 100644
--- a/src/defaultSettings.js
+++ b/src/defaultSettings.js
@@ -10,7 +10,7 @@ module.exports = {
     disableLocal: false,
   },
   title: 'Ant Design Pro',
-  pwa: true,
+  pwa: false,
   // Your custom iconfont Symbol script Url
   // eg：//at.alicdn.com/t/font_1039637_btcrd5co4w.js
   // 注意：如果需要图标多色，Iconfont 图标项目里要进行批量去色处理
diff --git a/src/global.js b/src/global.js
index a0ecf97a..55bea308 100644
--- a/src/global.js
+++ b/src/global.js
@@ -3,8 +3,6 @@ import { notification, Button, message } from 'antd';
 import { formatMessage } from 'umi-plugin-react/locale';
 import defaultSettings from './defaultSettings';
 
-window.React = React;
-
 const { pwa } = defaultSettings;
 // if pwa is true
 if (pwa) {
@@ -58,4 +56,9 @@ if (pwa) {
       onClose: async () => {},
     });
   });
+} else if ('serviceWorker' in navigator) {
+  // eslint-disable-next-line compat/compat
+  navigator.serviceWorker.ready.then(registration => {
+    registration.unregister();
+  });
 }