diff --git a/trunk/ProcessHacker.Native/OSVersion.cs b/trunk/ProcessHacker.Native/OSVersion.cs
index 9124044a6..4372ef25a 100644
--- a/trunk/ProcessHacker.Native/OSVersion.cs
+++ b/trunk/ProcessHacker.Native/OSVersion.cs
@@ -69,6 +69,7 @@ namespace ProcessHacker.Native
         private static int _bits = IntPtr.Size * 8;
         private static OSArch _arch = IntPtr.Size == 4 ? OSArch.I386 : OSArch.Amd64;
         private static WindowsVersion _windowsVersion;
+        private static string _versionString;
 
         private static ProcessAccess _minProcessQueryInfoAccess = ProcessAccess.QueryInformation;
         private static ThreadAccess _minThreadQueryInfoAccess = ThreadAccess.QueryInformation;
@@ -146,6 +147,11 @@ namespace ProcessHacker.Native
             get { return _bits.ToString() + "-" + "bit"; }
         }
 
+        public static string VersionString
+        {
+            get { return !string.IsNullOrEmpty(_versionString) ? _versionString : _versionString = Environment.OSVersion.VersionString; }
+        }
+
         public static OSArch Architecture
         {
             get { return _arch; }
diff --git a/trunk/ProcessHacker/Components/TaskDialog/TaskDialog.cs b/trunk/ProcessHacker/Components/TaskDialog/TaskDialog.cs
index 5feadabee..2bffca432 100644
--- a/trunk/ProcessHacker/Components/TaskDialog/TaskDialog.cs
+++ b/trunk/ProcessHacker/Components/TaskDialog/TaskDialog.cs
@@ -463,32 +463,6 @@ namespace ProcessHacker.Components
             this.Reset();
         }
 
-        /// <summary>
-        /// Returns true if the current operating system supports TaskDialog. If false TaskDialog.Show should not
-        /// be called as the results are undefined but often results in a crash.
-        /// </summary>
-        public static bool IsAvailableOnThisOS
-        {
-            get
-            {
-                OperatingSystem os = Environment.OSVersion;
-                if (os.Platform != PlatformID.Win32NT)
-                {
-                    return false;
-                }
-
-                return (os.Version.CompareTo(TaskDialog.RequiredOSVersion) >= 0);
-            }
-        }
-
-        /// <summary>
-        /// The minimum Windows version needed to support TaskDialog.
-        /// </summary>
-        public static Version RequiredOSVersion
-        {
-            get { return new Version(6, 0, 5243); }
-        }
-
         /// <summary>
         /// The string to be used for the dialog box title. If this parameter is NULL, the filename of the executable program is used.
         /// </summary>
diff --git a/trunk/ProcessHacker/Program/Program.cs b/trunk/ProcessHacker/Program/Program.cs
index 760a6b1c4..21956c8c6 100644
--- a/trunk/ProcessHacker/Program/Program.cs
+++ b/trunk/ProcessHacker/Program/Program.cs
@@ -890,7 +890,7 @@ namespace ProcessHacker
             info.AppendLine("Process Hacker " + Application.ProductVersion);
             info.AppendLine("Process Hacker Build Time: " + Utils.GetAssemblyBuildDate(System.Reflection.Assembly.GetExecutingAssembly(), false).ToString(System.Globalization.DateTimeFormatInfo.InvariantInfo));
             info.AppendLine("CLR Version: " + Environment.Version.ToString());
-            info.AppendLine("OS Version: " + Environment.OSVersion.VersionString + " (" + OSVersion.BitsString + ")");
+            info.AppendLine("OS Version: " + OSVersion.VersionString + " (" + OSVersion.BitsString + ")");
             info.AppendLine("Elevation: " + ElevationType.ToString());
             info.AppendLine("Working set: " + Utils.FormatSize(Environment.WorkingSet));
 
diff --git a/trunk/ProcessHacker/Program/Save.cs b/trunk/ProcessHacker/Program/Save.cs
index adb21907e..41d667ee4 100644
--- a/trunk/ProcessHacker/Program/Save.cs
+++ b/trunk/ProcessHacker/Program/Save.cs
@@ -106,7 +106,7 @@ namespace ProcessHacker
             StringBuilder sb = new StringBuilder();
 
             sb.AppendLine("Process Hacker version " + Application.ProductVersion);
-            sb.AppendLine(Environment.OSVersion.ToString() + " (" + OSVersion.BitsString + ")");
+            sb.AppendLine(OSVersion.VersionString + " (" + OSVersion.BitsString + ")");
 
             return sb.ToString();
         }