what changes need to be made to the web.config file to prevent this exception, I use the dotnet public identifier to implement the public identifier.
using (OpenIdRelyingParty openid = new OpenIdRelyingParty()) { IAuthenticationRequest request = openid.CreateRequest(this.txtOpenId.Text);
and at this point the exception is not thrown by the openid endpoint found, for example, in the case when I print requestid.com/openid
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