On Wed, 2024-09-04 at 11:54 +0100, MM wrote: > is it possible to connect with PGConnectdb version 15 to a server that has in METHOD in pg_hba.conf "scram-sha-256" > or do I need version libpq 16 ? You can use "scram-sha-256" authentication from v10 on. Note that it only works if the database password is a scram-sha-256 hash, not an MD5 hash. Yours, Laurenz Albe