Question about changed special characters received in Shibboleth via IIS 7.5

[IC-NL-SM-PS Support Center - Imtech ICT Performance Solutions]

Dear reader,

Could you please help me with a Shibboleth problem I have.

The environment used for the SP is a IIS 7.5 in combination with Windows 2008 R2. Attached are the Shibboleth2.xml and the Attribute-map.xml.  According to the IdP they are sending out UTF-8.

The problem I'm facing, is that special characters used in the LastName (Achternaam in Dutch) are changed beyond recognition. The following is part of the log fileprintout.

<saml:Attribute NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="Achternaam"><saml:AttributeValue xsi:type="xs:string" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">Laméris</saml:AttributeValue>
The name received by Shibboleth = Laméris. However it should be Laméris. So somehow along the way the special character 'é' is transformed into  'é'

My question, where can I adjust either IIS 7.5 or Shibboleth such that the special characters are used as is.

Met vriendelijke groeten / kind regards,

Helpdesk medewerker
(ma-vr 9:00 - 17:00)

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