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 Host Process for Windows Services or Værtsproces for Windows-opgaver or Windows Driver Foundation - User-mode Driver Framework Host Process or Windows or Processus hôte pour Tâches Windows or HostProctocal

belongs to software Microsoft Windows Operating System or Windows or Microsoft 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 (97% of all occurrences), 54,272 bytes, 76,800 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 5% 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_GEN.R0EBC0DJL15 or TROJ_GEN.R03AC0FB316 (detected by TrendMicro), and Trojan:Win32/Dynamer!ac or Backdoor:MSIL/Bladabindi (detected by Microsoft).
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.
When I play GTA IV,later GRAND THEFT AUTO IV has stopped working and I see host process for Windows tasks
After installating the last build taskhost.exe produced a System error on both My Surface Pro 3 an mey Hp computers. Non of them can boot now and I hope Microsoft can help retast my windows 10 which are now useless.
  François Larocque  
This popped up before the taskbar disappeared, the windows started bugging out with (restore down) (maximize) (close) with no minimize button, then the desktop wiped itself and I had to do a reboot. Could possibly be because I accidentally ended a windows process though. I also lagged a lot before the taskbar disappeared (went blank)
It is responsible for requiring me to reboot several times per day. It freezes Microsoft edge. I suggest not using Edge and, in fact, begin using Google Chrome. I have zero affiliation with Google.
  Gary Jermyn  

Rating chart

Summary: Average user rating of taskhost.exe: based on 24 votes with 14 user comments. 9 users think taskhost.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 4 users suspect danger. 6 users think taskhost.exe is dangerous and recommend removing it. 5 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 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 taskhost.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

taskhost.exe [all]