What scanning app is being used?
My thought is that Windows 11 or perhaps some app is not aware of the Epson Scanner and/or does not know how to "talk with it".
Is the scanner listed anywhere in Device Manager?
And check "Windows Fax and Scan" via the Search oval.
You can also use "WIN" + "I" > Bluetooth & Devices > Printers & scanners.
This scanner?
Epson Scanner
[Verify that I found the applicable
Epson scanner webpage.]
The next step is to manually download, install, and configure the scanner drivers directly from Epson. No third party tools or installers.
= = = =
If the scanner is still not found then try the following command via Powershell.
Get-PNPDevice
https://learn.microsoft.com/ja-jp/p...evice/get-pnpdevice?view=windowsserver2022-ps
Look for any results that include "scan", Epson, etc..
If the scanner is not listed then there may some other problem: bad port or cable.
Also - you mentioned email. Are you using "New Outlook" by any chance?