What is pthosttr.exe?

The genuine pthosttr.exe file is a software component of HP ProtectTools Security by Hewlett-Packard Development Company, L.P.
A security application, this process runs in the background and starts with Windows. It allows for protection of files and applications through smart cards, tokens, and a variety of other methods. HP ProtectTools Security can be managed through the configuration interface, accessible through the system tray. Based in Palo Alto, California, HP has been the world's leading PC manufacturer since 2007.

PTHostTr stands for ProtectTools Host Tray

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 pthosttr.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 pthosttr.exe related errors

Pthosttr.exe file information

Windows Task Manager with pthosttr
Pthosttr.exe process in Windows Task Manager

The process known as Adds Security Manager System Tray functionality or HP ProtectTools Security Manager belongs to software HP ProtectTools Security or HP ProtectTools Security Manager (version 2.00 B3, 2.00 C3) or pthosttr Application by Hewlett-Packard Development Company, L.P (

Description: Pthosttr.exe is not essential for Windows and will often cause problems. Pthosttr.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 73,728 bytes (29% of all occurrences), 122,880 bytes and 4 more variants. 
There is an icon for this program on the taskbar next to the clock. The program has a visible window. The pthosttr.exe file is not a Windows core file. Therefore the technical security rating is 18% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can do the following:
  • use the software publisher's support site
  • uninstall HP ProtectTools Security Manager 2.00 B3 or HP ProtectTools Security from your computer using the Control Panel applet Uninstall a Program

Recommended: Identify pthosttr.exe related errors

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

It writes a log file in C:\Documents and Settings\All Users\Application Data\hpqLog, and this can get very BIG. Mine was 67 Mb before I noticed after using the Laptop for 3 years. You can delete the log file and it will just create an new one next time it runs.
It's a process for ProtectTools security manager.
  John   (further information)

Summary: Average user rating of pthosttr.exe: based on 2 votes with 2 user comments. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving pthosttr issues

A clean and tidy computer is the key requirement for avoiding problems with pthosttr. 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 pthosttr.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

pthosttr.exe [all]