FIX: In the .NET Framework 2.0 Service Pack 1, the ModuleBuilder.GetTypeToken method returns an incorrect token


In the Microsoft .NET Framework 2.0 Service Pack 1, the ModuleBuilder.GetTypeToken method returns an incorrect token.

Note This problem does not occur in the .NET Framework 2.0.

For example, your code may contain the following information.
AssemblyBuilder assb = AppDomain.CurrentDomain.DefineDynamicAssembly(new AssemblyName("MyAssembly"), AssemblyBuilderAccess.ReflectionOnly);
ModuleBuilder modb = assb.DefineDynamicModule("MyModule");
Type t = typeof(object).MakeArrayType();
int Token = modb.GetTypeToken(t).Token;
Console.WriteLine("Token of type \"{0}\" is 0x{1}", t.ToString(), Token.ToString("x08"));
Type t2 = modb.ResolveType(Token);
Console.WriteLine("Token 0x{1} resolved to type \"{0}\"", t2.ToString(), Token.ToString("x08"));

catch (Exception xcpt)
Console.WriteLine("An exception of type {0} occurred:", xcpt.GetType());
Console.WriteLine("{0}", xcpt.Message);
Console.WriteLine("{0}", xcpt.StackTrace);
After you build your code, the output resembles the following:
Token of type "System.Object[]" is 0x01000001
An exception of type System.TypeLoadException occurred:
Could not load type 'System.Object[]' from assembly 'mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
at System.ModuleHandle.ResolveType(Int32 typeToken, RuntimeTypeHandle* typeInstArgs, Int32 typeInstCount, RuntimeTypeHandle* methodInstArgs, Int32 methodInstCount)
at System.ModuleHandle.ResolveTypeHandle(Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
at System.Reflection.Module.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
at System.Reflection.Module.ResolveType(Int32 metadataToken)
at tryfix401752.Program.Main(String[] args) in D:\KB950986\Program.cs:line 26


Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 2.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have the .NET Framework 2.0 Service Pack 1 installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 950986 - Last Review: Oct 8, 2011 - Revision: 1

Microsoft .NET Framework 2.0