Bug in .NET Framework less than 4: Wrong generation of SOAP-Header for WSSE (workaround in attachement)
Using WSSE Security Headers with username and password authentication in .NET Framework with version less than 4, the SOAP-Header has been generated not correctly. The instruction of namespace is missing completely or wrong.
For this reason, we implemented class ‚CustomCredentials‘ in C# to generate Security Header manually. You can find this in attachement.