diff --git a/SMBLibrary/Exceptions/InvalidRequestException.cs b/SMBLibrary/Exceptions/InvalidRequestException.cs
deleted file mode 100644
index fe36b41..0000000
--- a/SMBLibrary/Exceptions/InvalidRequestException.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
- * 
- * You can redistribute this program and/or modify it under the terms of
- * the GNU Lesser Public License as published by the Free Software Foundation,
- * either version 3 of the License, or (at your option) any later version.
- */
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace SMBLibrary
-{
-    public class InvalidRequestException : Exception
-    {
-        public InvalidRequestException() : base()
-        {
-        }
-
-        public InvalidRequestException(string message) : base(message)
-        {
-        }
-    }
-}
diff --git a/SMBLibrary/NetBios/NBTConnectionReceiveBuffer.cs b/SMBLibrary/NetBios/NBTConnectionReceiveBuffer.cs
index 3cd6cb2..d1ceb65 100644
--- a/SMBLibrary/NetBios/NBTConnectionReceiveBuffer.cs
+++ b/SMBLibrary/NetBios/NBTConnectionReceiveBuffer.cs
@@ -6,6 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.NetBios
@@ -55,7 +56,6 @@ namespace SMBLibrary.NetBios
         /// HasCompletePacket must be called and return true before calling DequeuePacket
         /// </summary>
         /// <exception cref="System.IO.InvalidDataException"></exception>
-        /// <exception cref="SMBLibrary.InvalidRequestException"></exception>
         public SessionPacket DequeuePacket()
         {
             SessionPacket packet;
@@ -65,7 +65,7 @@ namespace SMBLibrary.NetBios
             }
             catch (IndexOutOfRangeException ex)
             {
-                throw new System.IO.InvalidDataException("Invalid NetBIOS session packet", ex);
+                throw new InvalidDataException("Invalid NetBIOS session packet", ex);
             }
             RemovePacketBytes();
             return packet;
diff --git a/SMBLibrary/NetBios/SessionPackets/SessionPacket.cs b/SMBLibrary/NetBios/SessionPackets/SessionPacket.cs
index ca0e3c5..aabaad4 100644
--- a/SMBLibrary/NetBios/SessionPackets/SessionPacket.cs
+++ b/SMBLibrary/NetBios/SessionPackets/SessionPacket.cs
@@ -6,6 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.NetBios
@@ -80,7 +81,7 @@ namespace SMBLibrary.NetBios
                 case SessionPacketTypeName.SessionKeepAlive:
                     return new SessionKeepAlivePacket(buffer, offset);
                 default:
-                    throw new InvalidRequestException("Invalid NetBIOS session packet type: 0x" + type.ToString("X"));
+                    throw new InvalidDataException("Invalid NetBIOS session packet type: 0x" + type.ToString("X"));
             }
         }
     }
diff --git a/SMBLibrary/SMB1/Commands/CheckDirectoryRequest.cs b/SMBLibrary/SMB1/Commands/CheckDirectoryRequest.cs
index 00a2afc..af74c66 100644
--- a/SMBLibrary/SMB1/Commands/CheckDirectoryRequest.cs
+++ b/SMBLibrary/SMB1/Commands/CheckDirectoryRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -32,7 +32,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             DirectoryName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/CreateDirectoryRequest.cs b/SMBLibrary/SMB1/Commands/CreateDirectoryRequest.cs
index 2573937..c68a818 100644
--- a/SMBLibrary/SMB1/Commands/CreateDirectoryRequest.cs
+++ b/SMBLibrary/SMB1/Commands/CreateDirectoryRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -34,7 +34,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             DirectoryName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/DeleteDirectoryRequest.cs b/SMBLibrary/SMB1/Commands/DeleteDirectoryRequest.cs
index cb824ba..642fe65 100644
--- a/SMBLibrary/SMB1/Commands/DeleteDirectoryRequest.cs
+++ b/SMBLibrary/SMB1/Commands/DeleteDirectoryRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -31,7 +31,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             DirectoryName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/DeleteRequest.cs b/SMBLibrary/SMB1/Commands/DeleteRequest.cs
index 108cc88..6145f29 100644
--- a/SMBLibrary/SMB1/Commands/DeleteRequest.cs
+++ b/SMBLibrary/SMB1/Commands/DeleteRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -36,7 +36,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             FileName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/NegotiateRequest.cs b/SMBLibrary/SMB1/Commands/NegotiateRequest.cs
index a524a75..ad0fcbe 100644
--- a/SMBLibrary/SMB1/Commands/NegotiateRequest.cs
+++ b/SMBLibrary/SMB1/Commands/NegotiateRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -32,7 +32,7 @@ namespace SMBLibrary.SMB1
                 byte bufferFormat = ByteReader.ReadByte(this.SMBData, ref dataOffset);
                 if (bufferFormat != SupportedBufferFormat)
                 {
-                    throw new InvalidRequestException("Unsupported Buffer Format");
+                    throw new InvalidDataException("Unsupported Buffer Format");
                 }
                 string dialect = ByteReader.ReadNullTerminatedAnsiString(this.SMBData, dataOffset);
                 Dialects.Add(dialect);
diff --git a/SMBLibrary/SMB1/Commands/QueryInformationRequest.cs b/SMBLibrary/SMB1/Commands/QueryInformationRequest.cs
index b700201..a47c6ec 100644
--- a/SMBLibrary/SMB1/Commands/QueryInformationRequest.cs
+++ b/SMBLibrary/SMB1/Commands/QueryInformationRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -34,7 +34,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             FileName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/ReadResponse.cs b/SMBLibrary/SMB1/Commands/ReadResponse.cs
index e1c701d..7fe9cc7 100644
--- a/SMBLibrary/SMB1/Commands/ReadResponse.cs
+++ b/SMBLibrary/SMB1/Commands/ReadResponse.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -39,7 +39,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             ushort CountOfBytesRead = LittleEndianConverter.ToUInt16(this.SMBData, 1);
             Bytes = ByteReader.ReadBytes(this.SMBData, 3, CountOfBytesRead);
diff --git a/SMBLibrary/SMB1/Commands/RenameRequest.cs b/SMBLibrary/SMB1/Commands/RenameRequest.cs
index b642963..03d2b28 100644
--- a/SMBLibrary/SMB1/Commands/RenameRequest.cs
+++ b/SMBLibrary/SMB1/Commands/RenameRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -40,13 +40,13 @@ namespace SMBLibrary.SMB1
             BufferFormat1 = ByteReader.ReadByte(this.SMBData, ref dataOffset);
             if (BufferFormat1 != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             OldFileName = SMB1Helper.ReadSMBString(this.SMBData, ref dataOffset, isUnicode);
             BufferFormat2 = ByteReader.ReadByte(this.SMBData, ref dataOffset);
             if (BufferFormat2 != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             if (isUnicode)
             {
diff --git a/SMBLibrary/SMB1/Commands/SMB1Command.cs b/SMBLibrary/SMB1/Commands/SMB1Command.cs
index bb0f5d8..8f2b4ed 100644
--- a/SMBLibrary/SMB1/Commands/SMB1Command.cs
+++ b/SMBLibrary/SMB1/Commands/SMB1Command.cs
@@ -142,7 +142,7 @@ namespace SMBLibrary.SMB1
                         }
                         else
                         {
-                            throw new InvalidRequestException();
+                            throw new InvalidDataException();
                         }
                     }
                 case CommandName.SMB_COM_LOGOFF_ANDX:
diff --git a/SMBLibrary/SMB1/Commands/SetInformationRequest.cs b/SMBLibrary/SMB1/Commands/SetInformationRequest.cs
index e033b43..00fa2ba 100644
--- a/SMBLibrary/SMB1/Commands/SetInformationRequest.cs
+++ b/SMBLibrary/SMB1/Commands/SetInformationRequest.cs
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -41,7 +41,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             FileName = SMB1Helper.ReadSMBString(this.SMBData, 1, isUnicode);
         }
diff --git a/SMBLibrary/SMB1/Commands/WriteRequest.cs b/SMBLibrary/SMB1/Commands/WriteRequest.cs
index 0c1702e..d81e0f4 100644
--- a/SMBLibrary/SMB1/Commands/WriteRequest.cs
+++ b/SMBLibrary/SMB1/Commands/WriteRequest.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -46,7 +46,7 @@ namespace SMBLibrary.SMB1
             BufferFormat = ByteReader.ReadByte(this.SMBData, 0);
             if (BufferFormat != SupportedBufferFormat)
             {
-                throw new InvalidRequestException("Unsupported Buffer Format");
+                throw new InvalidDataException("Unsupported Buffer Format");
             }
             ushort dataLength = LittleEndianConverter.ToUInt16(this.SMBData, 1);
             Data = ByteReader.ReadBytes(this.SMBData, 3, dataLength);
diff --git a/SMBLibrary/SMB1/NTTransactSubcommands/NTTransactSubcommand.cs b/SMBLibrary/SMB1/NTTransactSubcommands/NTTransactSubcommand.cs
index f8aacfa..56b67fe 100644
--- a/SMBLibrary/SMB1/NTTransactSubcommands/NTTransactSubcommand.cs
+++ b/SMBLibrary/SMB1/NTTransactSubcommands/NTTransactSubcommand.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -52,7 +52,7 @@ namespace SMBLibrary.SMB1
                 case NTTransactSubcommandName.NT_TRANSACT_QUERY_SECURITY_DESC:
                     return new NTTransactQuerySecurityDescriptorRequest(parameters);
             }
-            throw new InvalidRequestException();
+            throw new InvalidDataException();
         }
     }
 }
diff --git a/SMBLibrary/SMB1/SMB1Message.cs b/SMBLibrary/SMB1/SMB1Message.cs
index 135062a..5843071 100644
--- a/SMBLibrary/SMB1/SMB1Message.cs
+++ b/SMBLibrary/SMB1/SMB1Message.cs
@@ -7,7 +7,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Text;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -99,7 +98,7 @@ namespace SMBLibrary.SMB1
         {
             if (!SMB1Header.IsValidSMB1Header(buffer))
             {
-                throw new InvalidRequestException("Invalid SMB header signature");
+                throw new InvalidDataException("Invalid SMB header signature");
             }
             return new SMB1Message(buffer);
         }
diff --git a/SMBLibrary/SMB1/Transaction2Subcommands/Transaction2Subcommand.cs b/SMBLibrary/SMB1/Transaction2Subcommands/Transaction2Subcommand.cs
index 9eb3f13..ce7b6c2 100644
--- a/SMBLibrary/SMB1/Transaction2Subcommands/Transaction2Subcommand.cs
+++ b/SMBLibrary/SMB1/Transaction2Subcommands/Transaction2Subcommand.cs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
  * 
  * You can redistribute this program and/or modify it under the terms of
  * the GNU Lesser Public License as published by the Free Software Foundation,
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -66,7 +66,7 @@ namespace SMBLibrary.SMB1
                         return new Transaction2GetDfsReferralRequest(parameters, data);
                 }
             }
-            throw new InvalidRequestException();
+            throw new InvalidDataException();
         }
     }
 }
diff --git a/SMBLibrary/SMB1/TransactionSubcommands/TransactionSubcommand.cs b/SMBLibrary/SMB1/TransactionSubcommands/TransactionSubcommand.cs
index a65cefa..54019a6 100644
--- a/SMBLibrary/SMB1/TransactionSubcommands/TransactionSubcommand.cs
+++ b/SMBLibrary/SMB1/TransactionSubcommands/TransactionSubcommand.cs
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using Utilities;
 
 namespace SMBLibrary.SMB1
@@ -68,7 +68,7 @@ namespace SMBLibrary.SMB1
                         return new TransactionCallNamedPipeRequest(setup, data);
                 }
             }
-            throw new InvalidRequestException();
+            throw new InvalidDataException();
         }
     }
 }
diff --git a/SMBLibrary/SMBLibrary.csproj b/SMBLibrary/SMBLibrary.csproj
index c1eedbb..10fb2e4 100644
--- a/SMBLibrary/SMBLibrary.csproj
+++ b/SMBLibrary/SMBLibrary.csproj
@@ -60,7 +60,6 @@
     <Compile Include="Enums\SMBTransportType.cs" />
     <Compile Include="Enums\Win32Error.cs" />
     <Compile Include="EnumStructures\AccessMask.cs" />
-    <Compile Include="Exceptions\InvalidRequestException.cs" />
     <Compile Include="Exceptions\UnsupportedInformationLevelException.cs" />
     <Compile Include="Helpers\FileTimeHelper.cs" />
     <Compile Include="NetBios\NameServicePackets\Enums\NameRecordType.cs" />
diff --git a/SMBLibrary/Server/SMB1/NTTransactHelper.cs b/SMBLibrary/Server/SMB1/NTTransactHelper.cs
index 5290e8f..69d14b5 100644
--- a/SMBLibrary/Server/SMB1/NTTransactHelper.cs
+++ b/SMBLibrary/Server/SMB1/NTTransactHelper.cs
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using SMBLibrary.SMB1;
 using Utilities;
 
@@ -52,7 +52,7 @@ namespace SMBLibrary.Server.SMB1
             ProcessStateObject processState = state.GetProcessState(header.PID);
             if (processState == null)
             {
-                throw new InvalidRequestException();
+                throw new InvalidDataException();
             }
             ByteWriter.WriteBytes(processState.TransactionParameters, (int)request.ParameterDisplacement, request.TransParameters);
             ByteWriter.WriteBytes(processState.TransactionData, (int)request.DataDisplacement, request.TransData);
diff --git a/SMBLibrary/Server/SMB1/TransactionHelper.cs b/SMBLibrary/Server/SMB1/TransactionHelper.cs
index db3ebd3..5caa89c 100644
--- a/SMBLibrary/Server/SMB1/TransactionHelper.cs
+++ b/SMBLibrary/Server/SMB1/TransactionHelper.cs
@@ -6,7 +6,7 @@
  */
 using System;
 using System.Collections.Generic;
-using System.Text;
+using System.IO;
 using SMBLibrary.SMB1;
 using SMBLibrary.RPC;
 using SMBLibrary.Services;
@@ -71,7 +71,7 @@ namespace SMBLibrary.Server.SMB1
             ProcessStateObject processState = state.GetProcessState(header.PID);
             if (processState == null)
             {
-                throw new InvalidRequestException();
+                throw new InvalidDataException();
             }
             ByteWriter.WriteBytes(processState.TransactionParameters, request.ParameterDisplacement, request.TransParameters);
             ByteWriter.WriteBytes(processState.TransactionData, request.DataDisplacement, request.TransData);