How To

What is dllhost.exe? How do I remove it from Windows 10?

Another way is the spam email that contains infected links or attachments. This is one of the main methods used by cybercriminals.

They send spam emails with a fake header information saying that they represent a well-known company.

This can make you curious about a certain offer, for example, and you open the attached file or go to a specified website mentioned in the mail. With this, your computer becomes infected.

Also, the user might be tricked into installing what they consider to be useful software.

How do I remove dllhost.exe?

As we said above, the malicious software could be removed manually, if you found it in folders other than System32.

But this is not a very safe and efficient method, so we recommend some specialized programs in removing the infection on your computer.

Bitdefender Antivirus is arguably the best antivirus of 2021. One of its specialties is perfect for this case: it detects and removes self-replicating malicious software such as dllhost.exe 32 COM Surrogate virus.



BitDefender is one of the most reliable antivirus applications that offers maximum protection to your PC.

This is everything you need to know about dllhost.exe. If you have any additional questions, let us know in the comments below.

FAQ: Learn more about dllhost.exe

  • What is process COM Surrogate?

The COM Surrogate is a different name for the Sacrificial process of a COM object that runs outside the process requesting it. For instance, File Explorer uses the COM Surrogate when extracting thumbnails.

  • How many instances of dllhosts should be running?

Normally there should only be 2 dllhosts running in the background and they should close after a few seconds. But in Windows 10 these 2 dllhosts might often trigger additional instances when you go to system settings.

  • Can I delete Dllhost EXE?

While it might be possible to delete this file as a system administrator, deleting it will lead to system instability and other issues.

Editor’s Note: This article was originally published in May 2019 and was revamped and updated in February 2021 for freshness, accuracy, and comprehensiveness.

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