The MFC-T910DW cannot perform a "Scan to a file" when connected via wired network.
The MFC-T910DW cannot perform a "Scan to a file" when connected via wired network.
There seems to be an issue where the printer fails to scan over the network after disconnecting from WIFI, despite having a LAN connection and other PCs still printing to it. You may need to adjust specific configurations to switch the scanning method from WIFI to LAN.
I think your printer or scanner doesn't automatically connect to the wired LAN when the WiFi link drops. You might need to adjust the settings on the device to switch to wired LAN.
The IP addresses will vary on the printer when switching from wireless to wired. Ensure you either have both IPs configured on the computer for the printer or use just one connection. If a cable link is available, utilize that instead of relying on WiFi.