What is CTskMstr.exe?

The genuine CTskMstr.exe file is a software component of Pharos Systems ComTaskMaster by Pharos Systems International.
"CTskMstr.exe" is the executable file known as Pharos Systems ComTaskMaster, which is part of the Pharos print management services. The file runs at startup or user login and monitors and records the number of printed documents within the service so that companies can track their expenses and what is printed to find cost effective solutions through the Pharos system. Pharos is a global printing service company that creates innovative solutions for large IT networks to manage and handle their printing processes.

CTskMstr stands for ComTaskMaster

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 CTskMstr.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 CTskMstr.exe related errors

CTskMstr.exe file information

Windows Task Manager with CTskMstr
CTskMstr.exe process in Windows Task Manager

The process known as Pharos Systems ComTaskMaster belongs to software PHAROS or Pharos Blueprint by Pharos Systems International (

Description: CTskMstr.exe is not essential for the Windows OS and causes relatively few problems. CTskMstr.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 294,912 bytes (32% of all occurrences), 339,456 bytes and 5 more variants. 
The program has no visible window. It is not a Windows core file. CTskMstr.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 49% dangerous.

Uninstalling this variant: If you still experience problems with CTskMstr.exe, you could also do the following:
  1) uninstall Pharos Blueprint from your computer using the Control Panel applet Uninstall a Program
  2) consult SBC’s Customer Service
  3) search for an update on the vendor’s website.

Recommended: Identify CTskMstr.exe related errors

Important: Some malware camouflages itself as CTskMstr.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the CTskMstr.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.


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Best practices for resolving CTskMstr issues

A clean and tidy computer is the key requirement for avoiding problems with CTskMstr. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the CTskMstr.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

CTskMstr.exe [all]