Hi,
Click the Wireless or Ethernet icon on the bottom of the printer screen and locate the IP Address of the printer.
From any device connected to the same local network, browse to this IP to access the EWS page of the printer.
Open the Scan tab and select Outgoing Email Profiles, there look for your existing scan profile and press Edit.
Follow the steps on screen and be sure to remove any value for the PIN or select a PIN (a password to scan from the printer), do not keep the auto filled value by the browser by any chance.
Next, generate and use an App password, a standard Yahoo password will result an authentication error:
https://yhoo.it/39iZc3T
Once completing the wizard press Save and Test and ensure the test completes successfully.
Shlomi


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