When upgrading to the last release (19-01-2017) you can experience an issue. The previous version had a wrong version number so moodle will think that the new version is old.
In order to fix that, before install the new version you may make a change on your moodle's database. If your database prefix is mdl_ execute:
UPDATE mdl_config_plugins SET value = '2016111801' WHERE name = 'version' AND plugin = 'auth_saml';
When upgrading to the last release (19-01-2017) you can experience an issue. The previous version had a wrong version number so moodle will think that the new version is old.
In order to fix that, before install the new version you may make a change on your moodle's database. If your database prefix is mdl_ execute: