[MM3-users] Re: How can we solve ZoneInfoNotFoundError

Aug. 5, 2026


      Dear Stephen,
since my last post to you in April 2026, some users of our Mailman3
service are still suffering from the "ZoneInfoNotFoundError" when
applying the "US/Eastern" timezone at login:
Internal Server Error: /mailman3/accounts/login/

ZoneInfoNotFoundError at /accounts/login/
'No time zone found with key US/Eastern'
Regarding
<https://gitlab.com/mailman/django-mailman3/-/merge_requests/348>, can
you say when this issue will be fixed and integrated into the next
Mailman3 release? Is there a workaround in the meantime?
With kind regards,
Markus Grandpré
--
Markus Grandpré (he/him)
Universität Konstanz
Kommunikations-, Informations- und Medienzentrum (KIM)
Abteilung IT-Dienste Forschung, Lehre und Infrastruktur
Sachgebiet Diensteadministration
78457 Konstanz
Tel: +49 7531 88-4342D