@rschell said in No local user authentication on 10-20 snap for GUI: the change set for issue #9051 appears to have caused this. If the router is relying on local authentication, the changes block checking the local database. Thank you for pointing this out, I have reverted the files to their old contents per the diffs and all is well. Diffs here: https://redmine.pfsense.org/projects/pfsense/repository/revisions/fe1afbb7549907e0d1cdfbf85d5f36d075a6a916/diff/src/etc/inc/auth.inc https://redmine.pfsense.org/projects/pfsense/repository/revisions/fe1afbb7549907e0d1cdfbf85d5f36d075a6a916/diff/src/etc/inc/priv.inc