Joomla SLO error

Ranil De Silva ranil.desilva at
Sun May 10 19:36:04 EDT 2015

Thanks Scott for the advice and the previous discussion with Scott C. I
ended up having to apply those instructions and got the logout sequence

Kind regards

On 8 May 2015 at 11:40, Scott Koranda <skoranda at> wrote:

> On Thu, May 7, 2015 at 8:25 PM, Ranil De Silva <
> ranil.desilva at> wrote:
>> Hi Folks,
>> I have a Joomla server running the Samlogin plugin (from creativedotit).
>> Authentication and logging into the SP with my Shibboleth IDP (v3.1.1) is
>> working fine but when I try and do the SLO logout, I get an unexpected
>> error thrown. The following log error:
>> 2015-05-08 11:07:29,757 - WARN
>> [net.shibboleth.idp.profile.impl.WebFlowMessageHandlerAdaptor:182] -
>> Profile Action WebFlowMessageHandlerAdaptor: Exception handling message
>> org.opensaml.messaging.handler.MessageHandlerException: Message context
>> was not authenticated
>> at
>> org.opensaml.messaging.handler.impl.CheckMandatoryAuthentication.doInvoke(
>> Is there an easy way to track the problem or where to look
> Use a tool like the SAML tracer plugin for Firefox to examine the SAML
> being sent from the SP to the IdP requesting the logout (assuming it is a
> front channel logout). Or turn on debug logging with the IdP to see the
> actual logout request sent by the SP.
> The SP may not be signing the logout request.
> If that is the case you can configure the IdP to not require signed logout
> requests from that particular SP. There was a thread between myself and
> Scott C about this last month.
> Of course if you can cause the SP to sign the logout request that would be
> best.
> Scott K
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