Hi Sébastien,
please note that we generally discourage the use of .0 releases in production environments.
Likely the issue is that a small error during the update process is preventing the server from properly starting.
For example not deleting the old /webapps/knime folder, or not renaming the new .war file to knime.war.
If you’d like, you can share the most recent catalina and localhost log files with support@knime.com. Maybe that already enables us to find the cause. Otherwise, we can also set up a call from there.
Please include a link to this thread, should you reach out per mail.
Kind regards
Marvin