diff --git a/ShareX.HelpersLib/Native/NativeMethods.cs b/ShareX.HelpersLib/Native/NativeMethods.cs
index 7c102bb02..97a80d0c6 100644
--- a/ShareX.HelpersLib/Native/NativeMethods.cs
+++ b/ShareX.HelpersLib/Native/NativeMethods.cs
@@ -138,7 +138,7 @@ public static partial class NativeMethods
         [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
         public static extern short GetKeyState(int keyCode);
 
-        [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
         public static extern IntPtr GetParent(IntPtr hWnd);
 
         [DllImport("user32.dll")]
@@ -716,6 +716,9 @@ public static extern int AVISaveOptions(IntPtr window, int flags, int streams, [
         [DllImport("dnsapi.dll")]
         public static extern uint DnsFlushResolverCache();
 
+        [DllImport("uxtheme.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
+        public static extern int SetWindowTheme(IntPtr hWnd, string pszSubAppName, string pszSubIdList);
+
         #endregion Other dll
     }
 }
\ No newline at end of file
diff --git a/ShareX/Forms/ApplicationSettingsForm.cs b/ShareX/Forms/ApplicationSettingsForm.cs
index 36932a515..ca27e636f 100644
--- a/ShareX/Forms/ApplicationSettingsForm.cs
+++ b/ShareX/Forms/ApplicationSettingsForm.cs
@@ -503,26 +503,32 @@ private void AddTheme(ShareXTheme theme)
 
         private void CbUseCustomTheme_CheckedChanged(object sender, EventArgs e)
         {
-            Program.Settings.UseCustomTheme = cbUseCustomTheme.Checked;
-            UpdateThemeControls();
-            ApplySelectedTheme();
+            if (ready)
+            {
+                Program.Settings.UseCustomTheme = cbUseCustomTheme.Checked;
+                UpdateThemeControls();
+                ApplySelectedTheme();
+            }
         }
 
         private void CbThemes_SelectedIndexChanged(object sender, EventArgs e)
         {
-            Program.Settings.SelectedTheme = cbThemes.SelectedIndex;
-
-            if (cbThemes.SelectedItem != null)
+            if (ready)
             {
-                pgTheme.SelectedObject = cbThemes.SelectedItem;
-            }
-            else
-            {
-                pgTheme.SelectedObject = null;
-            }
+                Program.Settings.SelectedTheme = cbThemes.SelectedIndex;
 
-            UpdateThemeControls();
-            ApplySelectedTheme();
+                if (cbThemes.SelectedItem != null)
+                {
+                    pgTheme.SelectedObject = cbThemes.SelectedItem;
+                }
+                else
+                {
+                    pgTheme.SelectedObject = null;
+                }
+
+                UpdateThemeControls();
+                ApplySelectedTheme();
+            }
         }
 
         private void BtnThemeAdd_Click(object sender, EventArgs e)
diff --git a/ShareX/ShareX.csproj b/ShareX/ShareX.csproj
index 9f3f50da2..9142094d3 100644
--- a/ShareX/ShareX.csproj
+++ b/ShareX/ShareX.csproj
@@ -22,7 +22,7 @@
     <ProjectReference Include="..\ShareX.UploadersLib\ShareX.UploadersLib.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Windows.SDK.Contracts" Version="10.0.22621.3233" />
+    <PackageReference Include="Microsoft.Windows.SDK.Contracts" Version="10.0.26100.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="ZXing.Net" Version="0.16.9" />
   </ItemGroup>