1 files changed, 45 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/UnauthorizedAccessException.cs b/src/mscorlib/shared/System/UnauthorizedAccessException.cs
new file mode 100644
index 0000000000..997358826f
--- /dev/null
+++ b/src/mscorlib/shared/System/UnauthorizedAccessException.cs
@@ -0,0 +1,45 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+**
+**
+** Purpose: An exception for OS 'access denied' types of 
+**          errors, including IO and limited security types 
+**          of errors.
+**
+** 
+===========================================================*/
+
+using System.Runtime.Serialization;
+
+namespace System
+{
+    // The UnauthorizedAccessException is thrown when access errors 
+    // occur from IO or other OS methods.  
+    [Serializable]
+    public class UnauthorizedAccessException : SystemException
+    {
+        public UnauthorizedAccessException()
+            : base(SR.Arg_UnauthorizedAccessException)
+        {
+            HResult = __HResults.COR_E_UNAUTHORIZEDACCESS;
+        }
+
+        public UnauthorizedAccessException(String message)
+            : base(message)
+        {
+            HResult = __HResults.COR_E_UNAUTHORIZEDACCESS;
+        }
+
+        public UnauthorizedAccessException(String message, Exception inner)
+            : base(message, inner)
+        {
+            HResult = __HResults.COR_E_UNAUTHORIZEDACCESS;
+        }
+
+        protected UnauthorizedAccessException(SerializationInfo info, StreamingContext context) : base(info, context) { }
+    }
+}