diff --git a/src/main/sys/sysproxy.ts b/src/main/sys/sysproxy.ts
index ee98f5a..b3e3183 100644
--- a/src/main/sys/sysproxy.ts
+++ b/src/main/sys/sysproxy.ts
@@ -63,10 +63,14 @@ export async function enableSysProxy(): Promise<void> {
   switch (mode || 'manual') {
     case 'auto': {
       if (process.platform === 'win32') {
-        await execFilePromise(path.join(resourcesFilesDir(), 'sysproxy.exe'), [
-          'pac',
-          `http://${host || '127.0.0.1'}:${pacPort}/pac`
-        ])
+        try {
+          await execFilePromise(path.join(resourcesFilesDir(), 'sysproxy.exe'), [
+            'pac',
+            `http://${host || '127.0.0.1'}:${pacPort}/pac`
+          ])
+        } catch {
+          triggerAutoProxy(true, `http://${host || '127.0.0.1'}:${pacPort}/pac`)
+        }
       } else {
         triggerAutoProxy(true, `http://${host || '127.0.0.1'}:${pacPort}/pac`)
       }
@@ -76,11 +80,15 @@ export async function enableSysProxy(): Promise<void> {
 
     case 'manual': {
       if (process.platform === 'win32') {
-        await execFilePromise(path.join(resourcesFilesDir(), 'sysproxy.exe'), [
-          'global',
-          `${host || '127.0.0.1'}:${port}`,
-          bypass.join(';')
-        ])
+        try {
+          await execFilePromise(path.join(resourcesFilesDir(), 'sysproxy.exe'), [
+            'global',
+            `${host || '127.0.0.1'}:${port}`,
+            bypass.join(';')
+          ])
+        } catch {
+          triggerManualProxy(true, host || '127.0.0.1', port, bypass.join(','))
+        }
       } else {
         triggerManualProxy(true, host || '127.0.0.1', port, bypass.join(','))
       }
diff --git a/src/renderer/src/components/sider/sysproxy-switcher.tsx b/src/renderer/src/components/sider/sysproxy-switcher.tsx
index 9413808..f0857a1 100644
--- a/src/renderer/src/components/sider/sysproxy-switcher.tsx
+++ b/src/renderer/src/components/sider/sysproxy-switcher.tsx
@@ -27,9 +27,13 @@ const SysproxySwitcher: React.FC = () => {
   })
   const transform = tf ? { x: tf.x, y: tf.y, scaleX: 1, scaleY: 1 } : null
   const onChange = async (enable: boolean): Promise<void> => {
-    await triggerSysProxy(enable)
-    await patchAppConfig({ sysProxy: { enable } })
-    window.electron.ipcRenderer.send('updateTrayMenu')
+    try {
+      await triggerSysProxy(enable)
+      await patchAppConfig({ sysProxy: { enable } })
+      window.electron.ipcRenderer.send('updateTrayMenu')
+    } catch (e) {
+      alert(e)
+    }
   }
 
   return (