Welcome Nicholas Cameron,
Thank you for reaching out to Microsoft Q&A forum.
Since you are seeing a message that the scanner has been locked by an administrator, could you first provide the exact wording of that message, along with the scanner/printer make and model requested above? This will help determine whether the restriction is coming from Windows or from the scanner software.
In the meantime, please check whether Windows still recognizes the scanner:
- Open Settings > Bluetooth & devices > Printers & scanners
- Check whether your scanner or multifunction printer is listed there
- If it is listed, select it and let us know what options or status Windows displays
- If it is not listed, select Add device and see whether Windows can detect it
Looking forward to your update.