VMware Horizon: 8.4.0
Scanner Model: Canon ImageFORMULA DR-M260
We're starting to explore using desktop scanners in our Horizon VDI environment. I currently have the scanner connected to the client machine via USB and have the scanner drivers installed on the client machine as well (client machine is a Windows 10 laptop). The connected scanner works properly outside of the VDI session on the Windows 10 laptop.
Within the guest OS, the scanner is detected by the agent and I'm seeing the VMware Virtual WIA Scanner imaging device in Device Manager. We're using the CaptureOnTouch Pro software (compatible with VMware Horizon scanner redirection according to Canon's documentation) to capture the scans. This all works properly with USB redirection enabled. With USB redirection disabled, the scanner is still detected by the agent, but the CaptureOnTouch Pro software does not detect the scanner.
My coworker who is more-senior than I am is under the impression that scanning should still work with USB redirection disabled. I'm under the impression that scanner redirection and usb redirection work in conjunction with one another. I can't seem to find the answer that I'm looking for in any documentation, so I figured that I would ask here to see if anyone could answer the below questions I have.
Question: If scanner redirection is enabled and a scanner is connected to a Windows client machine via USB, does USB redirection also need to be enabled in order for scanning to work properly within the VDI session? If scanner redirection is enabled and USB redirection is enabled, does the scanning operation leverage that scanner redirection or is everything just taking place with the USB redirection?
If there's any additional information or clarification that i could provide about the environment, please let me know and i'll be happy to add anything else that may be needed.
