XenApp and XenDesktop

TWAIN devices policy settings

The TWAIN devices section contains policy settings related to mapping client TWAIN devices, such as digital cameras or scanners, and optimizing image transfers from server to client.


TWAIN 2.0 is supported with Citrix Receiver for Windows 4.5.

Client TWAIN device redirection

This setting allows or prevents users from accessing TWAIN devices on the user device from image processing applications hosted on servers. By default, TWAIN device redirection is allowed.

The following policy settings are related:

  • TWAIN compression level
  • TWAIN device redirection bandwidth limit
  • TWAIN device redirection bandwidth limit percent


TWAIN redirection is not supported when using 64-bit applications.

TWAIN compression level

This setting specifies the level of compression of image transfers from client to server. Use Low for best image quality, Medium for good image quality, or High for low image quality. By default, medium compression is applied.

TWAIN devices policy settings