BenQ RP750K InstaQPrint User Manual - Page 47
Connection error: Host is unresolved, ERR Authentication failure: unknown user name or bad password
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17. Make sure that your printer is supported. If it is supported, please try selecting an appropriate driver manually. 18. To select a driver for your printer you need to do as follows: 1. Launch the app 2. Go to the list of detected printers by tapping 'Manage printers' (if you've already selected a printer, it can display the printer's make and model) button in the top of the screen -> 'Nearby Wi-Fi printers' 3. Tap and hold your printer (you will see a new pop-up menu) 4. Tap 'Select manually' 5. Select the driver Connection error: Host is unresolved This error comes up if you are not connected to any network and are trying to specify an IP address of your printer or if the IP address you specified is incorrect. It may also come up if you typed in an incorrect IP address of your network printer. Please enter correct host name or IP address. You can refer to any network-connected device in either of two ways: 1. by its IP address (a four-part number string such as "18.72.0.3"), in which the first part(s) identify the specific network to which the machine is connected; 2. by its host name (a text string such as "bitsy.mit.edu") which consists of the machine name (e.g., "bitsy") and the domain name. ERR Authentication failure: unknown user name or bad password This message is displayed if incorrect email account settings were rejected by the email service provider. 1. After inputting your email address and your password, tap 'Manual setup' button in the same dialogue window 2. Select Account type depending on the server you are connecting to: IMAP or POP3 3. Input server name, port number and security type Also please do as follows if the suggestions above were not helpful. ● Restart your mobile device and your router ● Re-install the app if the problem persists Settings for some email services can be found below. 47