Hi there! It sounds like you're having trouble scanning barcodes and shelf tags with the Walmart Volt scanner, but you can still enter the UPC manually or copy and paste it. Let's get that sorted for you.

To start off, could you let me know if the scanner was working fine before, or is this the first time you’re noticing this issue? Also, are you using a dedicated scanner device or the camera scanner within the Volt app on your Windows device?

In the meantime, here’s a step-by-step guide to troubleshoot the barcode scanning issue on your Windows device with the VOLT app:

1. Check Camera Permissions
Since the Volt app uses the camera to scan barcodes, ensure the app has permission to access the camera on your Windows 10 system:
- Go to Settings > Privacy > Camera
- Make sure “Allow apps to access your camera” is enabled
- Scroll down to find the VOLT app and ensure it’s allowed

2. Restart the App and Device
Sometimes, just closing the VOLT app completely and reopening it can refresh the scanning function. Also, try restarting your computer to clear any temporary glitches.

3. Clean the Camera Lens
Dirt or smudges on the camera lens can prevent scanning. Wipe the camera gently with a soft cloth.

4. Check for Software Updates
Make sure your VOLT app and Windows 10 are updated to the latest versions, as updates can fix bugs affecting scanning.

5. Test Camera Outside the App
Open the camera app on your system and try scanning a barcode or QR code with a third-party app or just see if the camera works properly to rule out hardware issues.

6. Lighting Conditions
Ensure you’re scanning in a well-lit environment. Insufficient lighting can cause scanning failures.

If after these steps the barcode scanner still doesn’t work while the manual entry works fine, there might be a deeper app or hardware interaction issue.

Please try these and let me know what happens. If needed, we can go further into advanced troubleshooting or check if there’s a known issue affecting Volt barcode scanners currently.

Are you satisfied with the initial solution I provided, or would you like me to guide you through these steps right now?