diff --git a/Plugins/Wox.Plugin.Program/Main.cs b/Plugins/Wox.Plugin.Program/Main.cs
index 49669fa812..4c3ff74ad5 100644
--- a/Plugins/Wox.Plugin.Program/Main.cs
+++ b/Plugins/Wox.Plugin.Program/Main.cs
@@ -42,6 +42,7 @@ namespace Wox.Plugin.Program
         public void Save()
         {
             _settingsStorage.Save();
+            _cache.Programs = _programs;
             _cacheStorage.Save();
         }
 
@@ -128,7 +129,7 @@ namespace Wox.Plugin.Program
 
         public static void IndexPrograms()
         {
-            _cache.Programs = AllWin32Programs();
+            _programs = AllWin32Programs();
             _uwps = UWP.All();
         }
 
diff --git a/Plugins/Wox.Plugin.Program/Programs/UWP.cs b/Plugins/Wox.Plugin.Program/Programs/UWP.cs
index fd7c3a52b6..5bd2495dcc 100644
--- a/Plugins/Wox.Plugin.Program/Programs/UWP.cs
+++ b/Plugins/Wox.Plugin.Program/Programs/UWP.cs
@@ -126,6 +126,7 @@ namespace Wox.Plugin.Program.Programs
             {
                 var packages = CurrentUserPackages();
                 var uwps = new List<UWP>();
+                // todo use parallel linq
                 Parallel.ForEach(packages, p =>
                 {
                     try