Desktop Studio console does not display the current user in the active XenDesktop session. Similarly, PowerShell cmdlet Get-BrokerDesktop does not have entries for SessionUserName and SessionUserSID. In this situation, the user disconnected from the existing XenDesktop session cannot reconnect to the existing XenDesktop session.

Desktop Studio console on Desktop Delivery Controller (Controller):

Get-BrokerDesktop Result:

PS C:\> get-brokerdesktop -DNSName winxpk.joeiii.ctx

…..

LaunchedViaHostName      : XD5DDC.joeIII.ctx

LaunchedViaIP                    : 192.168.200.20

LicenseId                             : F3BC5534

MachineName                     : JOEIII\WINXPK

MachineUid                             3

OSType                                  Windows XP Service Pack 3

OSVersion                          : 5.1.2600.196608

PowerActionPending              False

PowerState                             On

Protocol                                  HDX

PublishedApplications        : {}

PublishedName                  :

RegistrationState                : Registered

SID                                      : S-1-5-21-2219640574-753699312-2712279717-1111

SecureIcaActive                  : False

SecureIcaRequired             :

SessionId                            : 0

SessionState                           Active

SessionStateChangeTime      3/03/2011 9:56:17 AM

SessionUid                              7

SessionUserName             :

SessionUserSID                 :

SmartAccessTags             :

StartTime                            : 3/03/2011 9:56:11 AM

SummaryState                        InUse

…..

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Solution 1
Check the GPO setting – Do not process the legacy run list and change the setting to Not Configured or Disabled using Group Policy Object Editor. It is located in Computer Configuration\Administrative Template\System\Logon and User Configuration\Administrative Template\System\Logon.

Notes:

• Because the setting can be enabled in both Computer Configuration and User Configuration, Computer Configuration takes precedence over the policy setting in User Configuration.

• Because of the possibility of multiple GPOs applied to the Active Directory Organizational Unit containing the Virtual Delivery Agent, you must carefully investigate how many GPOs are applied to the Organizational Unit and which GPO is actually blocking the Citrix Session Helper from running.

Solution 2

Other issues have been found where username is not returned for the first session only. In this scenario using Procmon Boot Logging revealed that sysprep is running upon first start and causes delay. To resolve this problem we need to eliminate the sysprep running at startup, this should be done by properly creating the Master Image:
https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-5/cds-delivery-group-overview/cds-catalogs-landing-page/cds-prep-master-vm-rho.html

Other solution is to manually remove sysprep operation from following registry:
HKEY_LOCAL_MACHINE\System\Setup
Value Name: Cmdline

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Problem Cause

This is caused by one of the Group Policy Object settings - Do not process the legacy run list is enabled. This setting prevents Citrix Session Helper (ctxidhlp.exe, located in HKLM\Software\Microsoft\Windows\CurrrentVersion\Run on the Virtual Delivery Agent) from running within the XenDesktop session. The Controller relies on this process to run within a XenDesktop session as a trustworthy source of vital user information. Without this information, the Controller cannot broker the re-connection to a disconnected session.

Other cause could be the sysprep process running upon VDA restart due to incomplete master image preparation. This can be verified using Procmon Boot Time Log.

This article contains a resolution to the following symptom: "Desktop Studio does not show current user name".