Citrix Workspace For Mac 1906

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  1. What’s new in 1906. Control your Mac and Windows session on the workspace hub using peripheral devices. You can now use the keyboard and mouse on both the hub and the device to manage the session. For more information, see Citrix Casting. What’s new in 1904. This release contains enhancements that help improve overall performance and stability.
  2. Citrix Workspace App (CWKSPMac App 1808 and CWKSPMac App 1906) Note: MAC OS CATALINA IS NOT SUPPORTED AT THIS TIME. For detailed Installation instructions, see DC3 Remote Access - MAC User Guide.
  1. Download Citrix Workspace For Mac
  2. Citrix Workspace For Mac 1906 Download
  3. Citrix Workspace For Mac 10.13
  4. Citrix Workspace For Mac 10.14
  5. Citrix Workspace For Windows
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Download Citrix Workspace For Mac

Applicable Products

  • Citrix Virtual Apps and Desktops
  • XenDesktop

Symptoms or Error

Different types of networks may have different MTU/MSS requirements, which may result on packets being fragmented when transmitted on those networks. This can cause issues with applications that use UDP as transport protocol due to improper handling of UDP packet fragmentation. In the case of Citrix XenApp and XenDesktop / Virtual Apps and Desktops, this affects EDT since it is a UDP-based protocol. These issues can result on performance issues in ICA sessions, on EDT connections failing and falling back to TCP, or even not being able to establish a session altogether.
This is common when using VPN solutions like Cisco AnyConnect, when using Citrix Gateway hosted on Azure, when connected to certain Wi-Fi networks or mobile networks (3G, 4G, etc).
Environment:
XenApp and XenDesktop 7.15 or Citrix Virtual Apps and Desktops 1808+

Citrix Workspace For Mac 1906 Download


EDT-capable Citrix Receiver / Workspace app:
  • Receiver for Windows 4.9, Workspace app for Windows 1808+
  • Workspace app for Mac 1808+
  • Workspace app for Linux 1808+
  • Workspace app for iOS 1808+
  • Workspace app for Android 1909+

Solution

Citrix Virtual Apps and Desktops 7 1912 LTSR and Workspace app for Windows 1911 introduced support for EDT MTU Discovery. If using these versions (or newer) of the VDA and Workspace app for Windows, this workaround is not required. Please review the documentation for more details.
This workaround is needed if using VDA 1909 (or older), Workspace app for Windows 1910 (or older), or Workspace app for Mac, Linux, or iOS.
The workaround involves lowering the EDT MTU to a value that will not cause fragmentation.
This MTU value needs to be determined for each network. A tool like mturoute.exe can help determine the appropriate MTU for a network.
When using Azure:
  • If ICA traffic has to traverse an Azure Gateway, the EDT MTU must be set to 1350 since Azure limits the MTU on the Azure Gateway to 1400.
  • If using an Azure-hosted Citrix Gateway, the EDT MTU must be set to a value lower than 1500 (e.g. 1480).

Steps
1. Define the EDT MTU and Output Buffers Length in the ICA file template in the Storefront server:
Open the default.ica file for editing (by default it is located in C:inetpubwwwrootCitrix<StoreName>App_Datadefault.ica)
Add the following options under the [Application] section:
OutBufLength=1480
udtMSS=1480 (add this line if using Receiver for Windows 4.9 - 4.9 CU3, Workspace app for Linux 1808 - 1903, Workspace app 1808+ for Mac or iOS)
edtMSS=1480 (add this line if using Receiver for Windows 4.9 CU4+, Workspace app for Windows 1808+, Workspace app for Linux 1906+)
Notes:
If unsure whether to use 'udtMSS' or 'edtMSS', add both. The client will use the appropriate setting and ignore the one that does not apply.
edtMSS and OutBufLength should be set to the same value.
1480 was used as an example. Replace 1480 with the value that's appropriate for your network.
The client and server will agree on sizes during the connection negotiation.

2. Enable Receiver/Workspace app to read the custom EDT MTU and Output Buffers Length values.Mac
NOTE: If using Receiver for Windows 4.9 CU4+, Workspace app for Windows 1808+, or Workspace app for Mac 1809+, the configuration described below is NOT required, so step 2 can be omitted.
Create UDPStackParameters registry key, which is missing by default:
HKCUSOFTWARECitrixICA ClientEngineConfigurationAdvancedModulesUDPUDPStackParameters
There is a legacy issue in these Receivers for Windows where OutbufLength, when passed in an ICA file, is ignored.
Even if the registry value is modified to '*', meaning accept everything from the ICA file, the ICA file setting is still ignored.
For this to work, in addition to creating the 'UDPStackParameters' key as mentioned above, it is also necessary to modify the OutbufLength value in the registry and set it to the desired value determined above (1480 in the example):
Citrix Workspace For Mac 1906
  • 64-bit Windows
HKLMSOFTWAREWow6432NodeCitrixICA ClientEngineConfigurationAdvancedModulesTCP/IPOutbufLength

Citrix Workspace For Mac 10.13

  • 32-bit Windows
HKLMSOFTWARE CitrixICA ClientEngineConfigurationAdvancedModulesTCP/IPOutbufLength
Modify the appropriate App Property to allow Receiver to read the customer parameters in the ICA file. This property is set to NO by default.
To do this, open Terminal and run:
defaults write com.citrix.receiver.nomas UDPStackParameters -bool YES
Toggle the the 'Read EDT stack parameter' option, which is disabled by default:
Settings > Advanced > Adaptive Transport Settings > Read EDT stack parameter​

Citrix Workspace For Mac 10.14

Enable the 'EDT Stack Parameters' option, which is disabled by default:
Settings > Advanced > EDT Stack Parameters

Problem Cause

Citrix Workspace For Windows

MTU alteration not accounted dynamically by EDT, and IP Fragmentation not handled properly by network appliances.

Additional Resources