FIPS web.config更改无法正常工作

Question

我在web.config中添加了以下内容：

<configuration>
   <runtime>
      <enforceFIPSPolicy enabled="false" />
   </runtime>
</configuration>

但是，我仍然会收到以下fips错误：

Type : System.InvalidOperationException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : This implementation is not part of the Windows Platform FIPS  validated cryptographic algorithms.
Source : mscorlib
Help link : 
Data : System.Collections.ListDictionaryInternal
TargetSite : Void  HandleReturnMessage(System.Runtime.Remoting.Messaging.IMessage,    System.Runtime.Remoting.Messaging.IMessage)
HResult : -2146233079
Stack Trace : 
Server stack trace: 
   at System.Security.Cryptography.MD5CryptoServiceProvider..ctor()
   at Model.User.EncryptPassword(String password) in    c:\Model\ComposerModel\User.cs:line 87
   at Model.User.ConfirmPassword(String password) in c:\User.cs:line 103

我的web应用程序是.net 4上的silverlight应用程序