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[Cantor, Scott]

> I just want to inform you that IdP's metadata is updated automatically at
> our end.

If that were true you wouldn't be getting the error. Or they didn't update the metadata to begin with.

> I have configured certificate in the Shibboleth2.xml file in
> <CredentialsResolver> node.

Well, don't. It won't do anything actively harmful with no private key, but it won't do anything useful either.

-- Scott