diff --git a/CompatibilityManager/Resources/Strings.Designer.cs b/CompatibilityManager/Resources/Strings.Designer.cs
index 0b807b8..9b020e6 100644
--- a/CompatibilityManager/Resources/Strings.Designer.cs
+++ b/CompatibilityManager/Resources/Strings.Designer.cs
@@ -1,10 +1,10 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
-//     This code was generated by a tool.
-//     Runtime Version:4.0.30319.42000
+//     이 코드는 도구를 사용하여 생성되었습니다.
+//     런타임 버전:4.0.30319.42000
 //
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
+//     파일 내용을 변경하면 잘못된 동작이 발생할 수 있으며, 코드를 다시 생성하면
+//     이러한 변경 내용이 손실됩니다.
 // </auto-generated>
 //------------------------------------------------------------------------------
 
@@ -13,13 +13,13 @@ namespace CompatibilityManager.Resources {
     
     
     /// <summary>
-    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    ///   지역화된 문자열 등을 찾기 위한 강력한 형식의 리소스 클래스입니다.
     /// </summary>
-    // This class was auto-generated by the StronglyTypedResourceBuilder
-    // class via a tool like ResGen or Visual Studio.
-    // To add or remove a member, edit your .ResX file then rerun ResGen
-    // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "15.0.0.0")]
+    // 이 클래스는 ResGen 또는 Visual Studio와 같은 도구를 통해 StronglyTypedResourceBuilder
+    // 클래스에서 자동으로 생성되었습니다.
+    // 멤버를 추가하거나 제거하려면 .ResX 파일을 편집한 다음 /str 옵션을 사용하여 ResGen을
+    // 다시 실행하거나 VS 프로젝트를 다시 빌드하십시오.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "16.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     public class Strings {
@@ -33,7 +33,7 @@ internal Strings() {
         }
         
         /// <summary>
-        ///   Returns the cached ResourceManager instance used by this class.
+        ///   이 클래스에서 사용하는 캐시된 ResourceManager 인스턴스를 반환합니다.
         /// </summary>
         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
         public static global::System.Resources.ResourceManager ResourceManager {
@@ -47,8 +47,8 @@ internal Strings() {
         }
         
         /// <summary>
-        ///   Overrides the current thread's CurrentUICulture property for all
-        ///   resource lookups using this strongly typed resource class.
+        ///   이 강력한 형식의 리소스 클래스를 사용하여 모든 리소스 조회에 대해 현재 스레드의 CurrentUICulture 속성을
+        ///   재정의합니다.
         /// </summary>
         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
         public static global::System.Globalization.CultureInfo Culture {
@@ -61,7 +61,7 @@ internal Strings() {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Add files.
+        ///   Add files과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AddFiles {
             get {
@@ -70,7 +70,7 @@ public static string AddFiles {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Pick one or more executables to add to the list.
+        ///   Pick one or more executables to add to the list과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AddFilesDescription {
             get {
@@ -79,7 +79,7 @@ public static string AddFilesDescription {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Add folder.
+        ///   Add folder과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AddFolder {
             get {
@@ -88,9 +88,9 @@ public static string AddFolder {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Pick a folder to add to the list.
+        ///   Pick a folder to add to the list.
         ///The application will recursively set flags on all executables found in this folder.
-        ///If you pick something stupid like &quot;C:&quot;... well, you have been warned! :).
+        ///If you pick something stupid like &quot;C:&quot;... well, you have been warned! :)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AddFolderDescription {
             get {
@@ -99,7 +99,7 @@ public static string AddFolderDescription {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Additional flags.
+        ///   Additional flags과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AdditionalFlags {
             get {
@@ -108,7 +108,7 @@ public static string AdditionalFlags {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Multi-selection settings.
+        ///   Multi-selection settings과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string AggregatedSettings {
             get {
@@ -117,7 +117,7 @@ public static string AggregatedSettings {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Compatibility Manager.
+        ///   Compatibility Manager과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ApplicationName {
             get {
@@ -126,7 +126,7 @@ public static string ApplicationName {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Application settings.
+        ///   Application settings과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ApplicationSettings {
             get {
@@ -135,7 +135,7 @@ public static string ApplicationSettings {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to This should never happen: if it happened, either all hell broke loose, a Windows update broke my stuff (fuck you too, Bill!), or (most likely) I&apos;m just a very bad programmer. Please report ASAP!.
+        ///   This should never happen: if it happened, either all hell broke loose, a Windows update broke my stuff (fuck you too, Bill!), or (most likely) I&apos;m just a very bad programmer. Please report ASAP!과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CatastrophicFailureException {
             get {
@@ -144,7 +144,7 @@ public static string CatastrophicFailureException {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Clear (remove from registry on save).
+        ///   Clear (remove from registry on save)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Clear {
             get {
@@ -153,7 +153,7 @@ public static string Clear {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Reduced color mode.
+        ///   Reduced color mode과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ColorMode {
             get {
@@ -162,7 +162,7 @@ public static string ColorMode {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to 16-bit (65536) color.
+        ///   16-bit (65536) color과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ColorMode_COLOR16BIT {
             get {
@@ -171,7 +171,7 @@ public static string ColorMode_COLOR16BIT {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to 8-bit (256) color.
+        ///   8-bit (256) color과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ColorMode_COLOR256 {
             get {
@@ -180,7 +180,7 @@ public static string ColorMode_COLOR256 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Run this program in compatibility mode for:.
+        ///   Run this program in compatibility mode for:과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode {
             get {
@@ -189,7 +189,7 @@ public static string CompatibilityMode {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows Vista.
+        ///   Windows Vista과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_VISTARTM {
             get {
@@ -198,7 +198,7 @@ public static string CompatibilityMode_VISTARTM {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows Vista (Service Pack 1).
+        ///   Windows Vista (Service Pack 1)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_VISTASP1 {
             get {
@@ -207,7 +207,7 @@ public static string CompatibilityMode_VISTASP1 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows Vista (Service Pack 2).
+        ///   Windows Vista (Service Pack 2)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_VISTASP2 {
             get {
@@ -216,7 +216,7 @@ public static string CompatibilityMode_VISTASP2 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows 7.
+        ///   Windows 7과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WIN7RTM {
             get {
@@ -225,7 +225,7 @@ public static string CompatibilityMode_WIN7RTM {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows 8.
+        ///   Windows 8과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WIN8RTM {
             get {
@@ -234,7 +234,7 @@ public static string CompatibilityMode_WIN8RTM {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows 95.
+        ///   Windows 95과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WIN95 {
             get {
@@ -243,7 +243,7 @@ public static string CompatibilityMode_WIN95 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows 98.
+        ///   Windows 98과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WIN98 {
             get {
@@ -252,7 +252,7 @@ public static string CompatibilityMode_WIN98 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows XP (Service Pack 2).
+        ///   Windows XP (Service Pack 2)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WINXPSP2 {
             get {
@@ -261,7 +261,7 @@ public static string CompatibilityMode_WINXPSP2 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Windows XP (Service Pack 3).
+        ///   Windows XP (Service Pack 3)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string CompatibilityMode_WINXPSP3 {
             get {
@@ -270,7 +270,7 @@ public static string CompatibilityMode_WINXPSP3 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Disable fullscreen optimizations.
+        ///   Disable fullscreen optimizations과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string DisableFullscreenOptimizations {
             get {
@@ -279,8 +279,8 @@ public static string DisableFullscreenOptimizations {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Override high DPI scaling behavior.
-        ///Scaling performed by:.
+        ///   Override high DPI scaling behavior.
+        ///Scaling performed by:과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string DPIScaling {
             get {
@@ -289,7 +289,7 @@ public static string DPIScaling {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to System.
+        ///   System과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string DPIScaling_DPIUNAWARE {
             get {
@@ -298,7 +298,7 @@ public static string DPIScaling_DPIUNAWARE {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to System (Enhanced).
+        ///   System (Enhanced)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string DPIScaling_GDIDPISCALING {
             get {
@@ -307,7 +307,7 @@ public static string DPIScaling_GDIDPISCALING {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Application.
+        ///   Application과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string DPIScaling_HIGHDPIAWARE {
             get {
@@ -316,7 +316,7 @@ public static string DPIScaling_HIGHDPIAWARE {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Show HKLM (&quot;Change settings for all users&quot;).
+        ///   Show HKLM (&quot;Change settings for all users&quot;)과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Elevate {
             get {
@@ -325,7 +325,7 @@ public static string Elevate {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to {0} must be an Enum type..
+        ///   {0} must be an Enum type.과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string EnumTypeArgumentException {
             get {
@@ -334,7 +334,7 @@ public static string EnumTypeArgumentException {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Export.
+        ///   Export과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Export {
             get {
@@ -343,7 +343,7 @@ public static string Export {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to .
+        ///   과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ExportDescription {
             get {
@@ -352,7 +352,16 @@ public static string ExportDescription {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Current User.
+        ///   [Global Configuration]과(와) 유사한 지역화된 문자열을 찾습니다.
+        /// </summary>
+        public static string GlobalConfig {
+            get {
+                return ResourceManager.GetString("GlobalConfig", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Current User과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string HKCU {
             get {
@@ -361,7 +370,7 @@ public static string HKCU {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Local Machine.
+        ///   Local Machine과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string HKLM {
             get {
@@ -370,7 +379,7 @@ public static string HKLM {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Import.
+        ///   Import과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Import {
             get {
@@ -379,7 +388,7 @@ public static string Import {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Pick a .reg file to import.
+        ///   Pick a .reg file to import과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string ImportDescription {
             get {
@@ -388,8 +397,8 @@ public static string ImportDescription {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Please wait...
-        ///We&apos;re in the middle of some calibrations..
+        ///   Please wait...
+        ///We&apos;re in the middle of some calibrations.과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string PleaseWait {
             get {
@@ -398,7 +407,7 @@ public static string PleaseWait {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Regedit.
+        ///   Regedit과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Regedit {
             get {
@@ -407,7 +416,7 @@ public static string Regedit {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Reload selected from registry.
+        ///   Reload selected from registry과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Reload {
             get {
@@ -416,7 +425,7 @@ public static string Reload {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Run in 640 x 480 resolution.
+        ///   Run in 640 x 480 resolution과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Resolution640x480 {
             get {
@@ -425,7 +434,7 @@ public static string Resolution640x480 {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Run this program as an administrator.
+        ///   Run this program as an administrator과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string RunAsAdministrator {
             get {
@@ -434,7 +443,7 @@ public static string RunAsAdministrator {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Save selected to registry.
+        ///   Save selected to registry과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string Save {
             get {
@@ -443,10 +452,12 @@ public static string Save {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to This will save settings for each application to the registry.
+        ///   This will save settings for each application to the registry.
         ///If no settings have been selected for an application, it will be removed from the registry entries.
         ///
-        ///Confirm?.
+        ///For Steam games, the global configuration changes will apply after restarting Steam.
+        ///
+        ///Confirm?과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string SaveWarning {
             get {
@@ -455,7 +466,7 @@ public static string SaveWarning {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Select all.
+        ///   Select all과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string SelectAll {
             get {
@@ -464,7 +475,7 @@ public static string SelectAll {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Couldn&apos;t detect OS version. {0}.
+        ///   Couldn&apos;t detect OS version. {0}과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string UnknownOSException {
             get {
@@ -473,7 +484,7 @@ public static string UnknownOSException {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Unselect all.
+        ///   Unselect all과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string UnselectAll {
             get {
@@ -482,7 +493,7 @@ public static string UnselectAll {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Here be dragons!.
+        ///   Here be dragons!과(와) 유사한 지역화된 문자열을 찾습니다.
         /// </summary>
         public static string WarningTitle {
             get {
diff --git a/CompatibilityManager/Resources/Strings.resx b/CompatibilityManager/Resources/Strings.resx
index ae45954..ba52b23 100644
--- a/CompatibilityManager/Resources/Strings.resx
+++ b/CompatibilityManager/Resources/Strings.resx
@@ -205,6 +205,8 @@ If you pick something stupid like "C:"... well, you have been warned! :)</value>
     <value>This will save settings for each application to the registry.
 If no settings have been selected for an application, it will be removed from the registry entries.
 
+For Steam games, the global configuration changes will apply after restarting Steam.
+
 Confirm?</value>
   </data>
   <data name="WarningTitle" xml:space="preserve">
@@ -265,4 +267,7 @@ We're in the middle of some calibrations.</value>
   <data name="ImportDescription" xml:space="preserve">
     <value>Pick a .reg file to import</value>
   </data>
+  <data name="GlobalConfig" xml:space="preserve">
+    <value>[Global Configuration]</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/CompatibilityManager/Services/RegistryServices.cs b/CompatibilityManager/Services/RegistryServices.cs
index 22c63f6..13d2021 100644
--- a/CompatibilityManager/Services/RegistryServices.cs
+++ b/CompatibilityManager/Services/RegistryServices.cs
@@ -17,20 +17,36 @@ public static class RegistryServices
 
         private const string LastKeyRegistryKey = @"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Regedit";
         private const string LastKeyValueName = @"LastKey";
+
+        private const string HKCUEnvVarRegistryKey = @"Environment";
+        private const string HKLMEnvVarRegistryKey = @"SYSTEM\CurrentControlSet\Control\Session Manager\Environment";
+
+        public const string GlobalCompatEnvVarRegistryName = "__COMPAT_LAYER";
+
         private static string HKCU = $@"HKCU\{AppCompatFlagsRegistryKey}";
         private static string HKLM = $@"HKLM\{AppCompatFlagsRegistryKey}";
 
-        public static RegistryKey HKCUKey { get; } = GetRegistryKey(hklm: false);
-        public static RegistryKey HKLMKey { get; } = GetRegistryKey(hklm: true);
+        public static RegistryKey HKCUKey { get; } = GetRegistryKey(hklm: false, global: false);
+        public static RegistryKey HKLMKey { get; } = GetRegistryKey(hklm: true, global: false);
+        public static RegistryKey HKCUEnvVarKey { get; } = GetRegistryKey(hklm: false, global: true);
+        public static RegistryKey HKLMEnvVarKey { get; } = GetRegistryKey(hklm: true, global: true);
 
         #endregion
 
-        private static RegistryKey GetRegistryKey(bool hklm = false)
+        private static RegistryKey GetRegistryKey(bool hklm = false, bool global = false)
         {
             try
             {
-                if (hklm) { return Registry.LocalMachine.CreateSubKey(AppCompatFlagsRegistryKey); }
-                else { return Registry.CurrentUser.CreateSubKey(AppCompatFlagsRegistryKey); }
+                if (global)
+                {
+                    if (hklm) { return Registry.LocalMachine.CreateSubKey(HKLMEnvVarRegistryKey); }
+                    else { return Registry.CurrentUser.CreateSubKey(HKCUEnvVarRegistryKey); }
+                }
+                else
+                {
+                    if (hklm) { return Registry.LocalMachine.CreateSubKey(AppCompatFlagsRegistryKey); }
+                    else { return Registry.CurrentUser.CreateSubKey(AppCompatFlagsRegistryKey); }
+                }
             }
             catch (UnauthorizedAccessException)
             {
@@ -44,6 +60,17 @@ private static RegistryKey GetRegistryKey(bool hklm = false)
         public static IEnumerable<ApplicationViewModel> GetApplications(RegistryKey registryKey)
         {
             var applications = new List<ApplicationViewModel>();
+            var regName = registryKey.ToString();
+
+            if (regName.StartsWith("HKEY_CURRENT_USER") || regName.StartsWith("HKCU"))
+            {
+                applications.Add(new ApplicationViewModel(Resources.Strings.GlobalConfig, HKCUEnvVarKey));
+            }
+            else if (regName.StartsWith("HKEY_LOCAL_MACHINE") || regName.StartsWith("HKLM"))
+            {
+                applications.Add(new ApplicationViewModel(Resources.Strings.GlobalConfig, HKLMEnvVarKey));
+            }
+
             foreach (var path in registryKey.GetValueNames())
             {
                 applications.Add(new ApplicationViewModel(path, registryKey));
@@ -56,7 +83,8 @@ public static IEnumerable<ApplicationViewModel> GetApplications(RegistryKey regi
         /// </summary>
         public static string GetApplicationRegistryString(RegistryKey key, string path)
         {
-            return (string)key.GetValue(path);
+            var str = path == Resources.Strings.GlobalConfig ? RegistryServices.GlobalCompatEnvVarRegistryName : path;
+            return (string)key.GetValue(str);
         }
 
         /// <summary>
diff --git a/CompatibilityManager/ViewModels/MainViewModel.cs b/CompatibilityManager/ViewModels/MainViewModel.cs
index 6c77b03..bdf3eda 100644
--- a/CompatibilityManager/ViewModels/MainViewModel.cs
+++ b/CompatibilityManager/ViewModels/MainViewModel.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using System.Windows;
 
@@ -60,6 +61,9 @@ public SettingsViewModel DisplayedSettings
 
         public bool IsAnySelected => this.SelectedApplications.Any();
 
+        private const int HWND_BROADCAST = 0xffff;
+        private const uint WM_SETTINGCHANGE = 0x001a;
+
         #endregion
 
         #region Commands
@@ -163,17 +167,30 @@ private async void Save(IEnumerable<ApplicationViewModel> applications)
                 foreach (var application in applications)
                 {
                     var appCompatFlags = application.Settings.ToRegistryString();
+                    var path = application.Path == Resources.Strings.GlobalConfig ? RegistryServices.GlobalCompatEnvVarRegistryName : application.Path;
+
                     if (string.IsNullOrWhiteSpace(appCompatFlags))
                     {
-                        try { application.RegistryKey.DeleteValue(application.Path); }
+                        try { application.RegistryKey.DeleteValue(path); }
                         catch (ArgumentException) { } // Trying to delete application that does not exist in registry -- was added by user but no settings specified
-                        finally { taskApplicationsRemoved.Add(application); }
+                        finally
+                        {
+                            if (application.Path != Resources.Strings.GlobalConfig)
+                            {
+                                taskApplicationsRemoved.Add(application);
+                            }
+                        }
                     }
                     else
                     {
-                        application.RegistryKey.SetValue(application.Path, appCompatFlags);
+                        application.RegistryKey.SetValue(path, appCompatFlags);
                         taskApplicationsModified.Add(application);
                     }
+
+                    if (application.Path == Resources.Strings.GlobalConfig)
+                    {
+                        SendNotifyMessage((IntPtr)HWND_BROADCAST, WM_SETTINGCHANGE, (UIntPtr)0, "Environment"); // Send message for applications to update the environment variable -- this makes changes take effect without restarting Explorer.
+                    }
                 }
                 
                 foreach (var application in taskApplicationsModified)
@@ -228,5 +245,12 @@ private bool CanElevate()
         }
 
         #endregion
+
+        #region DLL Imports
+
+        [DllImport("user32.dll")]
+        static extern bool SendNotifyMessage(IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam);
+
+        #endregion
     }
 }