Citrix Health Assistant Error: The TCP port 1494 are used by other applications unknown.
Article ID: CTX331565
Updated On:
Description
When running Citrix Health Assistant on a VDA, the below error message will appear: the tcp port 1494 are being used by another application unknown
Resolution
To confirm if this is a Citrix issue or not, please carry out the below steps.
In command prompt, use command “netstat -ano” which will list the ports and corresponding process ID
Get the PID of port 1494 line and get the process information via Task Manager.
Next run command “netstat -abon -P TCP” and find the 1494 part on your machine.
If you get a message similar to the below image stating "Can not obtain ownership information" , then this is not a Citrix issue.
If you are able to obtain the information without the above message, please engage Citrix Technical Support.
Citrix Health Assistant depends on the output of “netstat -abon -P TCP” to check the process information.
On Windows Server VDA, the expected output is:
[TermService]
TCP 0.0.0.0:1494 0.0.0.0:0 LISTENING 1234
On Windows Workstation VDA, the expected output is:
[picaSvc2.exe]
TCP 0.0.0.0:1494 0.0.0.0:0 LISTENING 1234
The Citrix Health Assistant backend runs “netstat -abon -P TCP”, and read the output.
The 1494 line do not match the pattern “[NAME]” then Citrix Health Assistant raises a warning that indicate the port is occupied by unknown process.
This is the same to manually running the command in cmd.exe.
Issue may be permission related. You will need to engage your windows team / Microsoft to investigate further.
In command prompt, use command “netstat -ano” which will list the ports and corresponding process ID
Get the PID of port 1494 line and get the process information via Task Manager.
Next run command “netstat -abon -P TCP” and find the 1494 part on your machine.
If you get a message similar to the below image stating "Can not obtain ownership information" , then this is not a Citrix issue.
If you are able to obtain the information without the above message, please engage Citrix Technical Support.
Problem Cause
This issue is caused by the output change of the netstat command.Citrix Health Assistant depends on the output of “netstat -abon -P TCP” to check the process information.
On Windows Server VDA, the expected output is:
[TermService]
TCP 0.0.0.0:1494 0.0.0.0:0 LISTENING 1234
On Windows Workstation VDA, the expected output is:
[picaSvc2.exe]
TCP 0.0.0.0:1494 0.0.0.0:0 LISTENING 1234
The Citrix Health Assistant backend runs “netstat -abon -P TCP”, and read the output.
The 1494 line do not match the pattern “[NAME]” then Citrix Health Assistant raises a warning that indicate the port is occupied by unknown process.
This is the same to manually running the command in cmd.exe.
Issue may be permission related. You will need to engage your windows team / Microsoft to investigate further.
Issue/Introduction
Helps identify if error seen on Citrix health assistant "The TCP port 1494 are used by other applications unknown." is a Citrix issue or not.
Additional Information
For Cloud customers, Citrix Health Assistant is replaced by Cloud Health Check https://docs.citrix.com/en-us/citrix-virtual-apps-desktops-service/manage-deployment/cloud-health-check.html
For On-Prem customers, Citrix Health Assistant is is replaced by Scout Health Check https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/manage-deployment/cis/scout.html
For On-Prem customers, Citrix Health Assistant is is replaced by Scout Health Check https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/manage-deployment/cis/scout.html
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