diff --git a/web/src/apps/registry.ts b/web/src/apps/registry.ts
index 0cf3cd5..239512b 100644
--- a/web/src/apps/registry.ts
+++ b/web/src/apps/registry.ts
@@ -26,6 +26,10 @@ export function getAppsForEntry(entry: VfsEntry): AppDescriptor[] {
   return apps.filter(a => a.supported(entry));
 }
 
+export function getAppByKey(key: string): AppDescriptor | undefined {
+  return apps.find(a => a.key === key);
+}
+
 export function getDefaultAppForEntry(entry: VfsEntry): AppDescriptor | undefined {
   if (entry.is_dir) return;
   const ext = entry.name.split('.').pop()?.toLowerCase() || '';
diff --git a/web/src/pages/FileExplorerPage/FileExplorerPage.tsx b/web/src/pages/FileExplorerPage/FileExplorerPage.tsx
index f862c48..a6233c7 100644
--- a/web/src/pages/FileExplorerPage/FileExplorerPage.tsx
+++ b/web/src/pages/FileExplorerPage/FileExplorerPage.tsx
@@ -132,7 +132,7 @@ const FileExplorerPage = memo(function FileExplorerPage() {
             onRowClick={(r, e) => handleSelect(r, e.ctrlKey || e.metaKey)}
             onSelectionChange={setSelectedEntries}
             onOpen={handleOpenEntry}
-            onOpenWith={(entry, appKey) => confirmOpenWithApp(entry, { key: appKey, name: '' } as any)}
+            onOpenWith={(entry, appKey) => confirmOpenWithApp(entry, appKey)}
             onRename={setRenaming}
             onDelete={(entry) => doDelete([entry])}
             onContextMenu={openContextMenu}
@@ -192,7 +192,7 @@ const FileExplorerPage = memo(function FileExplorerPage() {
           processorTypes={processorTypes}
           onClose={closeContextMenus}
           onOpen={handleOpenEntry}
-          onOpenWith={(entry, appKey) => confirmOpenWithApp(entry, { key: appKey, name: '' } as any)}
+          onOpenWith={(entry, appKey) => confirmOpenWithApp(entry, appKey)}
           onDownload={doDownload}
           onRename={setRenaming}
           onDelete={(entriesToDelete) => doDelete(entriesToDelete)}
diff --git a/web/src/pages/FileExplorerPage/hooks/useAppWindows.tsx b/web/src/pages/FileExplorerPage/hooks/useAppWindows.tsx
index 699ee1d..5689d6b 100644
--- a/web/src/pages/FileExplorerPage/hooks/useAppWindows.tsx
+++ b/web/src/pages/FileExplorerPage/hooks/useAppWindows.tsx
@@ -3,7 +3,7 @@ import { Modal, Checkbox } from 'antd';
 import type { VfsEntry } from '../../../api/client';
 import type { AppDescriptor } from '../../../apps/registry';
 import type { AppWindow } from '../types';
-import { getAppsForEntry, getDefaultAppForEntry } from '../../../apps/registry';
+import { getAppsForEntry, getDefaultAppForEntry, getAppByKey } from '../../../apps/registry';
 
 export function useAppWindows(path: string) {
   const [appWindows, setAppWindows] = useState<AppWindow[]>([]);
@@ -47,7 +47,12 @@ export function useAppWindows(path: string) {
     openWithApp(entry, defaultApp);
   }, [openWithApp]);
 
-  const confirmOpenWithApp = useCallback((entry: VfsEntry, app: AppDescriptor) => {
+  const confirmOpenWithApp = useCallback((entry: VfsEntry, appKey: string) => {
+    const app = getAppByKey(appKey);
+    if (!app) {
+      Modal.error({ title: '错误', content: `应用 "${appKey}" 不存在。` });
+      return;
+    }
     const ext = entry.name.split('.').pop()?.toLowerCase() || '';
     let setDefault = false;
     Modal.confirm({