Local login has now been disabled for the HEPData Forum, following a request from the CERN Discourse service. The main hepdata.net site is unaffected and local login is still possible.
Users of the HEPData Forum will now need to log in using CERN Single Sign-On (SSO) if they want to post. Users with an existing account created with local login can request that their new account (created with CERN SSO) be merged with their old account by sending an email to info@hepdata.net.