Lexmark MS810n / MS810dn / MS810dtn
Using special characters in the username on any app that needs authentication, such as Device Quotas, prevents users from logging in.
Use the correct case for any Unicode character used in a username.
If the issue persists, then search for more information related to this issue or contact customer support.
Konfigurera skrivaren och datorn så att de kan kommunicera när du har installerat en seriell port på skrivaren.