A potentially dangerous Request.Form value was detected from the client - nordvall/WifExamples GitHub Wiki

This can happen when the client comes back from the STS and posts a SAML response to the website.

The solution depends on the version of .NET framework used:

.NET 3.5

.NET 4.0

.NET 4.5

Put the following setting in web.config:

<system.web>
  <httpRuntime requestValidationMode="4.5" />
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