Applicable Products

Linux VDA v1.4 and v7.12

Overview

You can set the maximum number of concurrent  sessions on a Linux VDA in two ways as described below.

Maximum number of sessions

For Linux VDA version 1.4 and later, setting the Maximum number of sessions policy is preferred.
 
This setting specifies the maximum number of concurrent sessions that a server can host. When the policy is enabled, the maximum number of concurrent sessions defaults to 250.
 
You can set the policy through Citrix Studio:

MaxInstanceCount

For Linux VDA earlier than version 1.4, you must specify the maximum number of concurrent sessions in the MaxInstanceCount legacy registry setting. By default, the value of that setting is unlimited.
 
Use the ctxreg utility to set MaxInstanceCount:
sudo ctxreg create -k "HKLM\System\CurrentControlSet\Control\Citrix\WinStations\tcp" -t "REG_DWORD" -v "MaxInstanceCount" -d "InstanceCount" –force
Where InstanceCount is a value greater than 0.