Director: Getting Error “Cannot retrieve the data” While Fetching Applications Running For A User Session Under Activity Manager Tab
Article ID: CTX319759
Updated On:
Description
Director: Getting error “Cannot retrieve the data” while fetching Applications running for a user Session under Activity Manager tab.
Environment
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Resolution
Adding an exception for DirectorComServer.exe in Software Restriction GPO applied on the VDA fixed the issue.
Problem Cause
Retrieving application or process list of an ICA session depends on Citrix DirectorComServer.exe running inside VDA. From Director CDF traces as well as VDA event logs, we could clearly see that the Session COM API failed because of being block by a Software Restriction policy.
Director CDF Logs:
2,3,2021/05/28 14:17:01:57382,15172,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Information,"Received the command : GetWindowsSessionId",""
254,2,2021/05/28 14:17:01:80376,12204,9412,w3wp.exe,0,DirectorService,,0,,5,EntryExit,"[t:63, s:unknown] GetSession called. sessionKey=5fc856e4-4f03-4cf9-8a20-53149ddc536e",""
12,2,2021/05/28 14:17:01:81157,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Information,"Received the command : GetRunningApplications",""
15,2,2021/05/28 14:17:01:81168,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Information," SessionIdKeyConversion.SessionKeyToSessionId() function is called with input brokerSessionKey = 5fc856e4-4f03-4cf9-8a20-53149ddc536e and output brokerSessionKey",""
17,1,2021/05/28 14:17:01:81763,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Error,"Session COM API failed with error: This program is blocked by group policy. For more information, contact your system administrator. (Exception from HRESULT: 0x800704EC)
at System.Runtime.InteropServices.Marshal.BindMoniker(IMoniker pmk, UInt32 grfOpt, Guid& iidResult, Object& ppvResult)
at System.Runtime.InteropServices.Marshal.BindToMoniker(String monikerName)
at Citrix.Dmc.Vda.Command.Implementation.DirectorPluginSyncImp.GetSessionObject(UInt32 windowsSessionId)
at Citrix.Dmc.Vda.Command.Implementation.DirectorPluginSyncImp.EnumerateTasks(EnumerateTasksPayload payload)",""
257,1,2021/05/28 14:17:01:84340,8036,9412,w3wp.exe,0,DirectorService,,0,,1,Error,"[t:23, s:unknown] NewMachineSynchronousCommand: Failed to execute command GetRunningApplications Error=Synchronous call on plugin failed with exception: This program is blocked by group policy. For more information, contact your system administrator. (Exception from HRESULT: 0x800704EC)",""
VDA Event Logs
We also saw the below event logged which showed that DirectorComServer.exe was block by Software Restriction Policy.
Director CDF Logs:
254,2,2021/05/28 14:17:01:80376,12204,9412,w3wp.exe,0,DirectorService,,0,,5,EntryExit,"[t:63, s:unknown] GetSession called. sessionKey=5fc856e4-4f03-4cf9-8a20-53149ddc536e",""
12,2,2021/05/28 14:17:01:81157,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Information,"Received the command : GetRunningApplications",""
15,2,2021/05/28 14:17:01:81168,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Information," SessionIdKeyConversion.SessionKeyToSessionId() function is called with input brokerSessionKey = 5fc856e4-4f03-4cf9-8a20-53149ddc536e and output brokerSessionKey",""
17,1,2021/05/28 14:17:01:81763,1488,3424,BrokerAgent.exe,0,DirectorVdaPlugin,,0,,1,Error,"Session COM API failed with error: This program is blocked by group policy. For more information, contact your system administrator. (Exception from HRESULT: 0x800704EC)
at System.Runtime.InteropServices.Marshal.BindMoniker(IMoniker pmk, UInt32 grfOpt, Guid& iidResult, Object& ppvResult)
at System.Runtime.InteropServices.Marshal.BindToMoniker(String monikerName)
at Citrix.Dmc.Vda.Command.Implementation.DirectorPluginSyncImp.GetSessionObject(UInt32 windowsSessionId)
at Citrix.Dmc.Vda.Command.Implementation.DirectorPluginSyncImp.EnumerateTasks(EnumerateTasksPayload payload)",""
257,1,2021/05/28 14:17:01:84340,8036,9412,w3wp.exe,0,DirectorService,,0,,1,Error,"[t:23, s:unknown] NewMachineSynchronousCommand: Failed to execute command GetRunningApplications Error=Synchronous call on plugin failed with exception: This program is blocked by group policy. For more information, contact your system administrator. (Exception from HRESULT: 0x800704EC)",""
VDA Event Logs
We also saw the below event logged which showed that DirectorComServer.exe was block by Software Restriction Policy.
Additional Information
Administer Software Restriction Policies
https://docs.microsoft.com/en-us/windows-server/identity/software-restriction-policies/administer-software-restriction-policies
Case Study: Unable to retrieve application/process list of a user session in Director
https://support.citrix.com/article/CTX226274
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