Blank user records are created by guest user when accessing service portal in an unauthenticated session Issue Blank users are getting generated by 'guest' user when accessing portal login page from an unauthenticated sessionCauseMissing the default guest user in the instance. ResolutionImport the default guest user record from another instance where the issue does not happen. If the guest user record is not there in any instance, import the xml from out of box instanceRelated LinksIf there is a custom sp_header_footer record where the sys_user record is updated, and if the guest user record is missing in the instance, it tries to insert a record with blank information. The sys_created_by on this newly inserted record shows 'guest'