NAPS utilizes both the WIA protocol and the TWAIN protocol.
For this you can utilize either the scanner vendor software utility or make use of a third party open source tool called NAPS.
Confirm that scanning operations work as expected on your local machine. In some cases, if the scanner device only makes use of the WIA protocol, you may need to keep the WIA service running. Disable the Windows Image Acquisition (WIA) service on your local machine in order to utilize the TWAIN protocol. Install the scanner driver and any associated utilities on your local machine. What happens when scanner driver causes conflicts if installed on Citrix VDA server?įollow the process below to configure scanner redirection inside a Citrix Virtual Apps and Desktops session. What happens with Microsoft Store based scanner driver apps inside Windows Server based Citrix VDA servers? Windows scan is a Microsoft Store app which allows for WIA-based scanning. When trying to configure scanning redirection inside Citrix, the following most common challenges can come up: Additionally, developers with existing TWAIN drivers can take advantage of TWAIN Direct today. TWAIN Direct reduces development time from weeks to days, supports modern programming languages, and delivers better user experience with a full feature set best suited for any application. The TWAIN Direct initiative is designed to minimize the coding required to support fully-featured image capture solutions in developer applications. Now, using the TWAIN Direct specification, developers have a protocol to allow their applications to communicate with scanners without the need for proprietary scanner drivers regardless of operating system. This decision was primarily influenced by the operating system and the API’s supported by the scanner hardware, which presented challenges for developers to switch to different operating systems, different scanner products, or to support new ones. Historically, developers had to decide which Image Capture API to use (e.g., TWAIN, WIA, ISIS, SANE, ICA, etc.) in order to “image-enable” an application. There are more scanning protocols available and this is where Twain Direct comes in to ease the work of system software developers who utilize the scanning protocol APIs in their apps. Further details about the WIA protocol drivers can be found at. There are two major scanning application protocols with their APIs, namely the old TWAIN (TWAIN 2.0) protocol and the Microsoft Windows Image Acquisition (WIA) protocol. You need to configure scanner device redirection in Citrix Virtual Apps and Desktops in order to utilize scanners and multi-function devices inside a Citrix session (hosted desktop or app).
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