What is Taskhost.exe, is it a Virus?

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Several users have contacted us with questions after finding that taskhostex.exe consumes a lot of system resources or behaves inconsistently. Other users will see a boot error associated with this executable, wondering if it is a legitimate Windows component or a potential security risk. The executable taskhostex.exe is available on Windows 10, Windows 8.1 and Windows 10.

What does Taskhost.exe do?

Windows uses taskhost.exe as the host for all DLL-based services. The process is very similar to svchost.exe (discussed above) because it is a generic method that can load other entities. For this reason, taskhost.exe can open several instances of itself to handle DLLs that are not necessarily linked.

TASKHOST is a generic process that hosts processes executed by DLLs and not by EXEs. At startup, TASKHOST checks the Services section of the registry to create a list of DLL services it needs to load and then loads them. There can be many instances of TASKHOST, as there will be one instance of TASKHOST for each service or group of services based on DLL (the grouping of services is determined by the programmers who wrote these services).

As it is an integral part of the operating system, I do not recommend that you delete it.

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Due to high CPU consumption, please use the Performance Monitor to display performance data in real time or from a log file.
The new Resource Monitor allows you to view detailed real-time information about the hardware resources (CPU, disk, network and memory) and system resources (including handles and modules) used by the operating system, services and running applications. You can also use the resource monitor to stop processes, start and stop services, analyze process blocks, view thread chains and identify process block files.

Is there a risk with Taskhost.exe?

The ability to load external DLLs carries the risk that taskhost.exe may be corrupted or infected by bad DLLs. Infection of this file is very rare, but most often a bad DLL is loaded and causes excessive use of memory and CPU.

You can view all DLLs currently loaded by taskhost.exe using the Process Explorer application specified in the svchost.exe article.

You can also use the /m command line, then scroll up to display all the loaded.dll files.

Should I delete Taskhostex.exe?

No! Disabling or deleting the actual system process is extremely dangerous for your PC because many services require it to work. There is a very high probability that by disabling this executable, you will prevent dozens of Windows services from running.

So, if you experience boot errors or high resource consumption associated with TaskHostEx, the ideal approach is to fix it rather than remove it.

Use the following instructions to troubleshoot boot errors associated with TaskHostEx.exe.

Computer code on a screen with a skull representing a computer virus / malware attack.

Causes of Taskhost.exe Errors

Before correcting errors, it is absolutely necessary to know the cause. Some of Taskhost’s most common errors are “taskhost.exe – application error”, “taskhost.exe – error”, and “taskhost.exe – access denied”.

  • A system file that was accidentally deleted or deleted during the antivirus scan.
  • Taskhost.exe file corrupted or corrupted by a virus attack.
  • Incorrect or partial installation/uninstallation of some applications.
  • Corruption of registry keys.
  • Problems with the hardware device driver


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