Citrix Receiver 1911


It is an optional download, provided on an as-is basis by Citrix to serve as an example. Before use, IT administrators must customize the scripts to suit their environment. The uninstall and install scripts may be used as noted in the upgrade guide for Citrix Workspace app for Windows. Version: (1911) Checksums. An update to the Windows Installer Service MS15-074 KB 3072630 released on July 14, 2015 is preventing the installation or upgrade to complete. Or GPO from AD 'Turn off Windows Installer RDS Compatibility' is set to Enabled on XenApp servers. The Citrix Receiver for Windows 4.7 might fail to redirect the scanners. The issue occurs when the Twain 2.0 device support causes regression with non-Twain 2.0 devices that are running on VDAs. LC8215 After you upgrade Citrix Receiver for Windows from Version 13.x to Version 14.4 using the PSExec command, attempts to log on to a store might.

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Applicable Products

  • XenApp


This article describes how to set up a scanner to function through an ICA session with XenApp.


Citrix policies must be enabled (depending on the type of scanner).

Other requirements

  • The scanner must be TWAIN compliant

  • The TWAIN drivers must be installed on the local device. They do not need to be installed on the XenApp server

  • The scanner can be attached locally or can be added using network.

  • Ensure that the scanner is using the local TWAIN driver and not the Windows Image Acquisition service

  • Ensure that there is no policy applied to the user account used for the test that is limiting the bandwidth within the ICA session (client USB redirection bandwidth limit for example)

  • After the Desktop Experience feature is installed, click Close to exit the Add Features Wizard, and then click yes to restart the computer

Remote Desktop Session Host Aware Requirement (Windows 2008 R2)

Some applications are not Remote Desktop Session Host aware. Complete one of the following tasks to allow the application to see the scanner within the RDS session:

Copy Twain_32.dll from C:WINDOWS to the Windows directory of each user within their XenApp profile.

  • C:UsersUserNameWINDOWS on Windows 2008 R2
  • C:Documents and SettingsUserNameWindows on Windows 2003

Create a flag within the Terminal Services application compatibility portion of the registry of the XenApp server for that particular application to point the Windows directory of the XenApp server (C:WINDOWS) instead of the user’s own Windows directory within their XenApp profile.

  1. Navigate to the Application Compatibility Flags portion of the registry:

    For a 32-bit application:
    HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftWindows NTCurrentVersionTerminal ServerCompatibilityApplications

    For an x64-but application:
    KEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionTerminal ServerCompatibilityApplications
  2. Create a Key and name it the same as the name for the application’s executable (that is ADOBEREADER)

  3. Create the REG_DWORD value of Flags=0x00000408

    • 0x00000008 = 32 bit application

    • 0x00000400 = refer to system Windows directory

    • that is for an application called Scanner Companion which is 32 bits and on an x64 Windows 2008 R2 XenApp server create the following key

      HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftWindows NTCurrentVersionTerminal ServerCompatibilityApplicationsSCANNERCOMPANION

    • Value

Citrix receiver 1911 45


To Test scanning in XenApp 6.5

  1. On the local device, navigate to the local services panel (Control Panel Administrative Tools) and disable the Windows Image Acquisition (WIA) service. This is done to ensure that the scanner will be using the TWAIN device driver.

  2. Scan a document locally using the scanner manufacturer’s scanning software to ensure that local scanning functions as expected.

  3. If scanning locally works successfully, log on to the XenApp 6.5 published desktop.

  4. Open a TWAIN compliant application to see if scanning functions as expected within the XenApp session.

  5. If the application does not see the scanner and scanning within XenApp fails, refer to the following troubleshooting section:

Troubleshooting Information

Desktop Experience Pack

  • For Windows 2008 R2 servers only
  • Some TWAIN devices require the XenApp server to have the Desktop Experience Pack which contains STI.inf, the default INF file for still image devices, as well as the core imaging system binaries including the STI/WIA service and the TWAIN Data Source Manager. To enable this on the server do the following:
  1. Start Server Manager. Xg 125 firewall.

  2. In the details pane, locate the Features Summary area, and then click Add Features.

  3. In the Add Features Wizard, click to select the Desktop Experience check box, and then click Next.

  4. Click Install.

  5. After the Desktop Experience feature is installed, click Close to exit the Add Features Wizard, and then click Yes to restart the computer.

TWAIN testing tool

Citrix Receiver 1911

Install Twacker – a third party TWAIN testing tool - to the XenApp server and to the local client device to test TWAIN scanning within a XenApp desktop session.

Citrix Receiver Workspace App 1911 For Windows

Download from here.

  1. Install Twacker.

  2. Within a XenApp published desktop session:

Citrix Receiver 1911 For Sale

  1. Launch Twacker (32 bit version).

  2. Click File > Select Source and select your scanner from the list.

  3. Click File > Acquire.

  4. Click the Scan button to test your scanner.

Citrix Receiver 1911 Parts

If the Twacker application is able to scan successfully then the XenApp environment is configured properly for USB redirection and to use TWAIN devices, and states all of the requirements have been met on the local client device. In case of further scanning issues within a particular application it is likely to be a software issue.