We do encounter following issue in 12.13 when accessing a category from a link in a Microsoft document when accessing the link for the first time. Refreshing the site or launching the link again works as expected.
It looks like this is an authentication issue because in some cases we do get a SAML2 exception message which is false because IdP and SP are correctly set up.
In that particular case, the error message is even more confusing:
The SAML2 module looks good, as it did work for a while without any issue. Any ideas? Somebody did experience something similar?
I know the answer from Craig: SAML2 is not supported by.... That's why I'm asking the community.
Thank you.