XenDesktop 7_1,XenDesktop 7,XenDesktop 5_6,XenDesktop 5_5,XenDesktop 5
The article guides you through the steps involved when troubleshooting Virtual Delivery Agent (VDA) registration for XenApp/XenDesktop - Virtual Desktop ...


This article will?? run?? through the steps involved when troubleshooting Virtual Delivery Agent (VDA) registration for XenApp/XenDesktop.


To capture information and troubleshoot in an automated manner you can leverage the following tool:?? CTX123278 - XDPing Tool
Refer to the following flowchart and action tips?? to help?? troubleshoot the?? VDA registration for XenApp/XenDesktop.

User-added image

From the Controller:
  1. Confirm if the?? VDA Citrix Desktop Service and "BrokerAgent.exe"?? is running using Services.msc and Task Manager.
  2. Ping the FQDN of the VDA from the Delivery Controller - DDC (Controller). If it fails to respond successfully check your DNS settings and network configuration.
  • Use CTX122450 -?? Citrix Port Check Utility to?? check IP address of the VDA on port 80 (Provide IP address, name or URL and port number)
  • Run Netstat – to check any process?? using the port
  • Disable firewalls and antivirus software temporarily
From the VDA:
  • ???? ???? Ping the FQDN address?? of the Controller from the VDA.
  • Use CTX122450 -?? Citrix Port Check Utility check IP address of the?? Controller from the VDA?? on port 80 and repeat?? the same troubleshooting actions?? bulleted?? as above.
Registry and Settings:
  • Confirm the clock time on both the?? Controller?? and the VDA are synchronized. (There is a maximum allowance of a 5 minute time difference.)
  • Using REGEDIT, verify the <b>ListOfDDCs</b> value for the following registry keys contains a valid list of Controllers:

XD/XA 7.x

  • HKEY_Local_Machine\Software\Citrix\VirtualDesktopAgent

XD 5.x

  • ?? ?? (x86) HKEY_Local_Machine\Software\Citrix\VirtualDesktopAgent
  • (x64) HKEY_Local_Machine\Software\Wow6432Node\Citrix\VirtualDesktopAgent
???? Note:?? ?? If the Virtual Machine is provisioned with Machine Creation Services the?? Personality.INI?? file will contain a list of DDCs.
  • (X86)HKEY_Local_Machine\Software\Policies\Citrix\VirtualDesktopAgent????

Enable Logging on Controller: Note:?? Logging is not enabled by default, enable logging on both the VDA and DDC to check for failures.

Additional Resources


Caution! Using Registry Editor incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.


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