Current lasso release (2.4.0 on 6.6 and 2.4.1(?) on upcoming 7.1) needs xml xsd:choices patches for Microsoft ADFS interoperability. Without these attempts to authenticate using mod_auth_mellon against our ADFS setup result in "Error processing authn response. Lasso error: [-427] When looking for an assertion we did not found it., referer [...]"
Patches from upstream lasso git:
(Above patches are to be included in upcoming lasso 2.4.2 release.)
Patches apply cleanly to current lasso 2.4.0 and and fix 'assertion not found' problem.
Please consider including in next lasso update,
Thank you for reporting this issue.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.