Unknown or Unusable Identity Provider for Shib 3.2 SP

[Cantor, Scott]

Of course it's true also that if you have evidence of other SPs requesting your metadata in the logs, that suggests the absence of it from this SP would be meaningful.

But hoonestly, no, I can't see a way to connect from that to this error, so I guess you are rightly confused, but it doesn't change my conclusion. It's not possible to get the error ahead of an AuthnRequest being issued, when it had been working, unless the metadata on that end changed or expired (or something else unrelated broke and the timing was just hugely coincidental).

None of those guesses can be assessed without the SP logs and knowing how the metadata was managed and what state its in.

-- Scott