Product Documentation

About Citrix Receiver for Windows 4.7

Mar 27, 2017

Citrix Receiver for Windows provides users with secure, self-service access to virtual desktops and apps provided by XenApp and XenDesktop.

What's new in this release

Bidirectional content redirection

Bidirectional content redirection enables administrators to specify client to host and host to client URL redirection using client and host policies. Server policies are set in Citrix Studio, and client polices are set in the Citrix Receiver Group Policy Object administrative template. This feature works in both desktop sessions and application sessions.

Bidirectional content redirection is supported on domain-joined client devices only. Bidirectional content redirection functions even when there are no active sessions running on the server.

Citrix recommends that you use bidirectional content redirection for URL redirection.

Bidirectional content redirection requires XenApp or XenDesktop 7.13 and later. This feature supports only Internet Explorer 8 through 11.

For information on configuring bidirectional content redirection, see Configuring Bidirectional Content Redirection.

Generic Client Input Method Editors (IME)

Starting with this release, Citrix Receiver for Windows allows you to use an Input Method Editor (IME) on both the client and on the server. This feature, generic client IME, provides a seamless mechanism to redirect the IME in a session for a better user experience. This feature enables you to input text in East Asian characters dynamically in a VDA session.

Using this feature, you can compose text at the insertion point rather than in a separate window. At the insertion point, a candidate window with the list of composing characters appears when using either a physical or a touch keyboard.

By default, generic client IME inherits and honors the existing keyboard layout synchronization settings.

For more information on configuring generic client IME, see Configuring Generic client IME

Auto client reconnect and session reliability

In XenApp and XenDesktop 7.10 and earlier, you were required to configure auto client reconnect and session reliability both using a Citrix Studio policy and by modifying the registry or the default.ica file. 

Starting with XenApp and XenDesktop 7.11, you can configure auto client reconnect and session reliability using only the Citrix Studio policy. Citrix Receiver for Windows registers the auto client reconnect and session reliability settings set in the Citrix Studio policy and applies them accordingly.

Note:

  1. When you set the Enable session reliability option to Disabled either in the Citrix Receiver Group Policy Object administrative template or the Citrix Studio policy on the DDC, session reliability is disabled.
  2. When the Enable session reliability option is not configured in the Citrix Studio policy, and set to Disabled in the Citrix Receiver Group Policy Object administrative template, session reliability is enabled.
For more information on this feature, see Auto client reconnect and session reliability.

Validating free disk space

Starting with this release, before installing Citrix Receiver for Windows, the installer verifies whether there is enough available disk space to complete the installation. This check is performed on both the graphical user interface and the command line interface installation. 

For more information on this feature, see Validating free disk space

Adaptive transport

Adaptive transport for XenApp and XenDesktop optimizes data transport by applying a new Citrix protocol called Enlightened Data Transport (EDT) in preference to TCP whenever possible. Compared to TCP and UDP, EDT delivers a superior user experience on long-haul WAN and internet connections. EDT dynamically responds to changing network conditions while maintaining high server scalability and efficient use of network capacity. EDT is built on UDP and improves data throughput for all ICA virtual channels, including Thinwire display remoting, file transfer (Client Drive Mapping), printing, multimedia redirection. If UDP is not available, adaptive transport automatically reverts to TCP.

For more information on how to configure adaptive transport, see Configuring Adaptive Transport layer.

Extended cipher support

Citrix Receiver for Windows extends support for RSA keys of 3072 bit length for enhanced security. The support is applicable on the following ciphers suites:

  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
For more information on supported cipher suites, see About TLS and Group Policies.

CDM Enhancement

On a local area network (LAN), the performance of file copy operation using CDM between the client and the VDA and the other way around has been improved. This enhancement requires both Citrix Receiver for Windows 4.7, and XenApp and XenDesktop 7.13 and later.