Seiko Epson provides interim workaround in FAQ
Problem that "Epson Scan2" cannot start after applying Windows security update
- Display the [Devices] screen of the Windows "Settings" app Display the [Devices] screen of the "Settings" app
- Display the [Input] screen View
- Click [Advanced keyboard settings] at the bottom Click [Advanced keyboard settings]
- In the [Override default input method] pull-down list, select [Japanese - Select [Japanese - Microsoft IME] from the pull-down list to select Microsoft IME