Hi!
Welcome to the Microsoft Q&A forum.
Can you tell me when you say "no longer available", available where? Do you use a certain application/program that tells you it is not working?
Also, did you perform the basic troubleshooting like checking if the device itself is ON or plugged-in to the power outlet, restart it and check for any indicators or error message that appears when you use the scanner?(please provide the exact error that appears if there is)