I created a new user but i cant login

[Tomuter]

I created a new user but i cant login

[LukasHirt]

Could you please check the server logs with that request ID? Also, I would ask you to please provide more information about your env. And finally, for such issues, opening a bug in the relevant repository (oCIS: https://github.com/owncloud/ocis, oC classic: https://github.com/owncloud/core) would generally be the better approach.