Hi Yonatan,
The most common causes of a 404 on Wazuh SSO:
Wrong redirect/callback URL
Please review your dashboard configuration.
/etc/wazuh-dashboard/opensearch_dashboards.yml
Check if the configuration looks like this.
opensearch_security.auth.multiple_auth_enabled: true
opensearch_security.auth.type: ["basicauth","saml"]
server.xsrf.allowlist: ["/_opendistro/_security/saml/acs", "/_opendistro/_security/saml/logout", "/_opendistro/_security/saml/acs/idpinitiated"]
Ref: Wazuh dashboard configuration
If you make any changes to the configuration, restart the Wazuh dashboard service using this command:
systemctl restart wazuh-dashboard
Let me know the update on this.