ADFS : ADFS 3.0 - no web.config

I've blogged before about the changes in ADFS 3.0 on Server 2012 R2.

No IIS so no web.config.

Hang on - what about things like:

<context hidden="true" />
<error page="Error.aspx" />
<acceptedFederationProtocols saml="true" wsFederation="true" />
<homeRealmDiscovery page="HomeRealmDiscovery.aspx" />
<persistIdentityProviderInformation enabled="true" lifetimeInDays="30" /> 

They are no longer there.

The trick is to use PowerShell: (Thanks @paullem!)

Set-AdfsWebConfig

e.g.

Set-AdfsWebConfig -ContextCookieEnabled $True -HRDCookieEnabled $True -HRDCookieLifetime 30

Enjoy!