fix #1252 #1251

Plugins/Wox.Plugin.Program/Main.cs

@@ -78,8 +78,17 @@ namespace Wox.Plugin.Program
                 w = Win32.All(_settings);
             });
             var t2 = Task.Run(() =>
+            {
+                var windows10 = new Version(10, 0);
+                var support = Environment.OSVersion.Version.Major >= windows10.Major;
+                if (support)
                 {
                     u = UWP.All();
+                }
+                else
+                {
+                    u = new UWP.Application[] { };
+                }
             });
             Task.WaitAll(t1, t2);