It is most likely ssl related , or maybe ssl-verify-server. Both of which used to be off by default, but now on by default. Some people already complained that switching off SSL helped to speed server (or client, or both) up <https://jira.mariadb.org/browse/MDEV-36267> (. We do not know what it is, maybe it is large integer math which is slow, but maybe the client is trying to read CRL from the internet, while doing full-blown certificate validation) But maybe you can help us understand, since you're affected. You probably need to restart server with --connect-timeout=1000 or something like that Can you run command line client with a) --ssl=0 b) --ssl=1 --ssl-verify-server-cert=1 c) --ssl=1 --ssl-verify-server-cert=0 Can you report connect time with all these configurations? Best, you do it in a bug report here https://jira.mariadb.org/ ? HeidiSQL perhaps does not do this auto-SSL, or maybe it just uses an older client library. Thank you! On Fri, Apr 11, 2025 at 8:24 AM gerhard.pauls--- via discuss < discuss@lists.mariadb.org> wrote:

Hi,

I installed MariaDB 11.4.5 on Windows Server 2019. The command line client installed together with server can't connect:

C: \Program Files\MariaDB 11.4\bin>mysql -u user -p ERROR 2813 (HY000): Lost connection to server at 'sending authentication information', system error: 0

In the server err log: [Warning] Could not read packet: fd: 1424 state: 1 read length: 4 errno: 0 vio_errno: 1158 length: -1

Problem does not occur with HeidiSQL. Problem does not occur with MariaDB clients version 11.4.0 or lower Problem occurs with MariaDB clients version 11.4.1 or higher

Any idea what the problem might be?

Best regards, Gerhard _______________________________________________ discuss mailing list -- discuss@lists.mariadb.org To unsubscribe send an email to discuss-leave@lists.mariadb.org