Do you mean that "Hörner-PC/Hörner" is supposed to be your internal Odoo database user? If yes, you have to provide me a taster of your dope :-)

In a standard Odoo installation, the internal Odoo database user is "odoo". You might well change that, even if I see no reason for it, but in that case please try to avoid any non-standard ASCII characters.

Hi,

You can use pgadmin to create a new role with the supplied name [Hörner as in your case] by odoo log ...

Update:

or try to use the server parameters to enforce the db user:

--db_user <user here e.g openpg >, --db_password <password>

when you're running the server ...

hope this could helps

Thanks to all who helped or wanted to help!

The Error on the machine wasn't solved. I now use Odoo 8 on a virtual machine, which worked from the beginning.

=========================================

Htm-Mbs, Travis Waelbroeck, Ermin Trevisan, Ahmed M.Elmubarak. Hello, grüetzi and As-salam alaykom! Thank you very much for your answers!

To make this clear: i did not use "Hörner-PC/Hörner" as username for Odoo. I do use "Hörner" to login to Windows. The name of my machine, my pc is "Hörner-PC". I never specified any username for using Odoo (i can't access it in any way, as mentioned above - 500 internal server error). The only username i was able to choose was the postgreSQL "openpg"-username during the Odoo all-in-one-installer installation. But I kept this standard username.

I didn't set any Odoo-specific username. If I understand correctly, odoo logs into postgreSQL by using usr "openpg" (see https://pl.vc/1i1zpy ). How come that i get

C:\Odoo8\server>openerp-server.exe
2016-07-31 08:19:07,546 8988 INFO ? openerp: OpenERP version 8.0-20160729
2016-07-31 08:19:07,546 8988 INFO ? openerp: addons paths: [u'C:\\Users\\H\xf6rner\\AppData\\Local\\OpenERP S.A.\\Odoo\\addons\\8.0', u'C:\\Odoo8\\server\\openerp\\addons']
2016-07-31 08:19:07,562 8988 INFO ? openerp: database hostname: localhost
2016-07-31 08:19:07,562 8988 INFO ? openerp: database port: 5432
2016-07-31 08:19:07,562 8988 INFO ? openerp: database user: Hörner
2016-07-31 08:19:08,891 8988 INFO ? openerp.service.server: HTTP service (werkzeug) running on 0.0.0.0:8069

The database user differs from the one shown by pgAdmin. AND it is my windows username.

I tried to add the role "Hörner". It didn't work. I still get "OperationalError: FATAL: role �H�rner� doesn't exist".

This PC once was infedted by a virus. Is it possible that this scrambled the encoding?

Answer to Ermins comment from 31.07. 12:04:

this is the content of my openerp-server.conf:

[options]

addons_path = C:\Odoo8\server\openerp\addons

admin_passwd = admin

auto_reload = None

bin_path = C:\Odoo8\thirdparty

csv_internal_sep = ,

Adding

database user = openpg

or

user = openpg

won't change a thing

===============================

Thanks to all who helped or wanted to help!

The Error on the machine wasn't solved. I now use Odoo 8 on a virtual machine, which worked from the beginning.

================================

Hello Ermin, hello Ahmed,

thank you very much again for your answers. As soon as it's possible i'll give your ideas a try. As i'm not a my machine at the next days, it'll take a while.

Julian