If you selected Keycloak inetgration, the you need to login to Keycloak administration console and change admin@ovirt password there. More information can be found at https://www.keycloak.org/archive/documentation-15.0.html
Freshly installed 4.5.4. I can't log into the Keycloak Administrator Console using admin@ovirt account that works perfectly fine to log me into the oVirt Administrator Portal. The /var/log/ovirt-engine/keycloak.log says: 2023-05-04 19:31:50,148+03 WARN [org.keycloak.events] (default task-48) [] type=LOGIN_ERROR, realmId=master, clientId=security-admin-console, userId=null, ipAddress=9x.7x.1x.1x, error=user_not_found, auth_method=openid-connect, auth_type=code, redirect_uri=https://$OVIRT_ENGINE_FQDN/ovirt-engine-auth/admin/master/console/, code_id=5d9176b7-96c8- 4903-a552-349a8cd20876, username=admin@ovirt, authSessionParentId=5d9176b7-96c8-4903-a552-349a8cd20876, authSessionTabId=BI3_6g5_x58 Any idea why I may be getting the user_not_found error?