What is taskhost.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 taskhost.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.

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Taskhost.exe file information

Windows Task Manager with taskhost
Taskhost.exe process in Windows Task Manager

The process known as Host Process for Windows Tasks or Host Process for Windows Task or Værtsproces for Windows-opgaver or Processus hôte pour Tâches Windows or HostProctocal or Hostprozess für Windows-Aufgaben

belongs to software Microsoft Windows Operating System or Windows or Microsoft Windows Operativsystem or Système d’exploitation Microsoft Windows or Betriebssystem Microsoft Windows

by Microsoft (

Description: The original taskhost.exe from Microsoft is an important part of Windows, but often causes problems. Taskhost.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 49,152 bytes (98% of all occurrences), 54,272 bytes or 50,688 bytes. 
Taskhost.exe is a Windows core system file. The program is not visible. Taskhost.exe is a Microsoft signed file. Therefore the technical security rating is 3% dangerous, however you should also read the user reviews.

Recommended: Identify taskhost.exe related errors

Viruses with the same file name

Is taskhost.exe a virus? No, it is not. The true taskhost.exe file is a safe Microsoft Windows system process, called "Host Process for Windows Tasks". However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are for example Troj/VB-HNK (detected by Sophos), and Trojan.GenericKD.1841162 or Gen:Variant.Zusy.10792 (detected by BitDefender).
To ensure that no rogue taskhost.exe is running on your PC, click here to run a Free Malware Scan.

How to recognize suspicious variants?

Important: Some malware disguises itself as taskhost.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the taskhost.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 is started by services.exe which is itself does not look good.
Host Process for Windows Tasks or taskhost.exe (microsoft)
Task Host - Generic Host Process for Windows 7 32-bit Services. Loads 50-60% of CPU.
keeps my computer from shutting down
  Cindy Faust   (further information)
Essential for Windows
eats a lot of cpu its a system process it is started when firefox started when restarting pc it is disabled but returned when loading a heavy program
It is an important file for Windows, but it does use a lot of resources upon startup. It uses ~90% disc space for a few minutes for me. :(
  WISD0MTREE   (further information)
I work at Fedex and got the taskhost virus. Microsft should help users defend themselves.
Just because it is started by services doesnt mean it is a bad thing. Taskhost is a legitimate process. It is used by windows to run dlls. It should be located at C:\Windows\System32\Taskhost.exe.See the website below for more information if it is taking up a lot of your processor. Source: A lot of time spent with the windows Operating system.
  moros   (further information)
It seems to come up a lot when suspicious things happen to my system. Considering it's Microsoft it wouldn't surprise me if it's both essential and dangerous at the same time. They alone could write the perfect malware by integrating it with an essential process. Or maybe it just creates an exploitable weakness which is the same thing but with deniability. Needs a new rating that's not on the list.

Rating chart

Summary: Average user rating of taskhost.exe: based on 20 votes with 10 user comments. 9 users think taskhost.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 2 users think it's neither essential nor dangerous. 3 users suspect danger. 4 users think taskhost.exe is dangerous and recommend removing it. 4 users don't grade taskhost.exe ("not sure about it").

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Best practices for resolving taskhost issues

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

taskhost.exe [all]