No user login possible

I installed a VM Appliance of Nextcloud 12 from
Installation an post installation script all ran without errors. Login on webmin console runs well.
But no user login is possible. Neither with the ncadmin nor with an other user.
Every time the same error: “Wrong password, reset it?”.
So what can I do?
Thank you for some help.


no one any idea?

Did you try to reset it (you need to set a mail address for the user)? If not you can also use the occ-command to reset passwords from terminal.

Yes! That’s it!
Thank you very much!