What is ssonsvr.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the ssonsvr.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for ssonsvr.exe related errors

Ssonsvr.exe file information

Windows Task Manager with ssonsvr
Ssonsvr.exe process in Windows Task Manager

The process known as Program Neighborhood or Citrix Pass-through Authentication

belongs to software Citrix ICA Client or Citrix Program Neighborhood or Citrix_0902_ENU_CEIC_B01 or Citrix XenApp Plugin for Hosted or Citrix Presentation Server Client or Citrix Presentation Server or Citrix online plug-in or Citrix XenApp Plugin for Hosted Apps

by Citrix Systems (

Description: Ssonsvr.exe is not essential for the Windows OS and causes relatively few problems. Ssonsvr.exe is located in a subfolder of "C:\Program Files"—e.g. C:\Program Files\Citrix\ICA Client\. Known file sizes on Windows 10/8/7/XP are 16,656 bytes (53% of all occurrences), 37,136 bytes and 11 more variants. 
The program is not visible. It is not a Windows system file. There is no description of the program. Therefore the technical security rating is 44% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can do the following:
  • search for help on the company's website
  • uninstall the program using the Control Panel ⇒ Uninstall a ProgramCitrix ICA Client or Citrix Program Neighborhood

Recommended: Identify ssonsvr.exe related errors

Important: Some malware camouflages itself as ssonsvr.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ssonsvr.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Citrix PNAgent
Part of a citrix client
  Anne W, Koster   (further information)
citrix pnagent
Citrix Client
It is installed as part of Citrix ICA Client and is necessary for Pass Through authentication
  Shawn D. Lambert   (further information)
single sign on service -= passthrough

Rating chart

Summary: Average user rating of ssonsvr.exe: based on 12 votes with 6 user comments. 9 users think ssonsvr.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. One user thinks ssonsvr.exe is dangerous and recommends removing it. 2 users don't grade ssonsvr.exe ("not sure about it").

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Best practices for resolving ssonsvr issues

A clean and tidy computer is the key requirement for avoiding problems with ssonsvr. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ssonsvr.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ssonsvr.exe [all]