What is KHost.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 KHost.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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KHost.exe file information

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

The process known as Delivery Manager or Secure Delivery Plug-In belongs to software Delivery Manager or BBC iPlayer Download Manager or Secure Delivery Plug-In or Kontiki Media Manager or Sky Anytime or Microsoft Office Home and by Kontiki (

Description: KHost.exe is not essential for Windows and will often cause problems. The file KHost.exe is located in a subfolder of "C:\Program Files" (mostly C:\Windows\kdx\). Known file sizes on Windows 10/8/7/XP are 1,032,376 bytes (51% of all occurrences), 1,032,640 bytes, 1,461,800 bytes, 1,466,920 bytes or 1,040,832 bytes. 
It is not a Windows system file. The file has a digital signature. The file is a Verisign signed file. The process starts upon Windows startup (see Registry key: Run, MACHINE\Run). You can uninstall this program in the Control Panel. The program is not visible. KHost.exe is able to connect to the Internet, record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 18% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall the software 4oD or BBC iPlayer Download Manager using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify KHost.exe related errors

If KHost.exe is located in a subfolder of C:\Windows, the security rating is 56% dangerous. The file size is 2,236,416 bytes (70% of all occurrences), 1,757,184 bytes or 2,260,992 bytes. It is not a Windows core file. The software is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). The program has no visible window. It is an unknown file in the Windows folder. KHost.exe is able to connect to the Internet, record keyboard and mouse inputs and monitor applications.

External information from Paul Collins:

Important: Some malware camouflages itself as KHost.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the KHost.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 seems to be necessary for peer to peer sharing sites like the BBC iPlayer. But you don't need it if you just watch online streaming. If its worrying you remove it or reinstall one of the players
its by sky to help distrobute their tv programs and such. a p2p system if you will!
  David Miller  
It is used to streams video content for apps such as BBC iplayer, channel 4 4OD, Sky Player etc.
it came with BBC i-player
Also used with Sky's 'Live TV' service. Harmless.
Used for Sky Broadband, BBC iPlayer and 4od. All used for downloading.
Khost.exe is part of most video sharing applications which is used to securely download to your hardrive.
I think it came with BBCi player
  Ross m  
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of KHost.exe: based on 44 votes with 9 reviews. 14 users think KHost.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 21 users think it's neither essential nor dangerous. 3 users suspect danger. 3 users think KHost.exe is dangerous and recommend removing it. 8 users don't grade KHost.exe ("not sure about it").

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Best practices for resolving KHost issues

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

KHost.exe [all]