How to Fix Dllhost.exe Application Error?

by Olivia Morelli - -


Issue: How to Fix Dllhost.exe Application Error?

Hello, I receive a strange error message, and I don’t know what to do about it. The notification informs about Dllhost.exe Application Error. What is it and how can I fix it?

Solved Answer


Dllhost.exe file is an important Windows operating system file, which is also known as COM Surrogate. This process is responsible for showing thumbnails, helping File Explorer to function, and so on. If you open the Task Manager, you always see this process running in the background. Generally speaking, all executable (.exe) files are necessary for each software application because they include instructions how the computer has to carry out particular functions. When you click on this file, the computer reads the command created by the software developers and runs it. Without this kind of files computers and applications won’t work. However, seeing Dllhost.exe Application Error when launching computer or running some programs is a sign that something is wrong with your computer. Uninstalled Windows updates may cause this error, as well as invalid registry entries, damaged, corrupted or deleted Dllhost.exe files or other files related to it. However, often this error is caused because by the malware attack.

Malware and viruses can use the name of Dllhost.exe to bypass computer’s security and infiltrate the system. Often malware is spread in the insidious .exe file via malicious SPAM emails, infected websites or malware-laden ads. Therefore, after getting inside the computer, malware can corrupt, replace or damage .exe files and Dllhost.exe might be one of them. Hence, you receive either Dllhost.exe Application error or one of these warnings:

  • “Dllhost.exe Application Error.”
  • “Cannot find dllhost.exe.”
  • “Dllhost.exe not found.”
  • “Dllhost.exe is not a valid Win32 application.”
  • “Dllhost.exe has encountered a problem and needs to close. We are sorry for the inconvenience.”
  • “Dllhost.exe failed.”
  • “Dllhost.exe is not running.”
  • “Faulting Application Path: dllhost.exe.”
  • “Error starting program: dllhost.exe.”

For this reason, you have to scan your computer with strong and reputable malware removal tools and make sure that your computer is not infected. We recommend performing full system scan with Reimage.

How to fix Dllhost.exe Application error manually?

Fix it now! Fix it now!
To repair damaged system, you have to purchase the licensed version of Reimage Reimage.

Before talking about manual Dllhost.exe error elimination method, we want to stress out that it’s complicated and hard task for not so advanced computer users. For regular computer users we recommend relying on professional tools such as Reimage and RegCure Pro.

Method 1. Fix Dllhost.exe Application error using System Restore

  1. Click the Start button.
  2. In the search box type “System Restore” and hit “Enter.”
  3. Choose “restore point” and restore your PC.

Method 2. Dllhost.exe error using Windows System File Checker

  1. Click the Start button.
  2. In the search box type “command.”
  3. Hit Ctrl + Shift buttons at the same time and press “Enter.”
  4. Then, you will see a dialog box. Click “Yes” there.
  5. Type “sfc /scannow” and hit “Enter.”
  6. Wait while Windows System File starts and finishes scanning for the system file errors.

Method 3. Install Windows updates

  1. Click the Start button.
  2. Type “update” in the “search box” and click “Enter.”
  3. Wait till the Windows Update dialog box appears. If there are any available updates, select the “Install Updates” button.

Repair your Errors automatically team is trying to do its best to help users find the best solutions for eliminating their errors. If you don't want to struggle with manual repair techniques, please use the automatic software. All recommended products have been tested and approved by our professionals. Tools that you can use to fix your error are listed bellow:

We might be affiliated with any product we recommend on the site. Full disclosure in our Agreement of Use. By Downloading any provided Anti-spyware software you agree to our privacy policy and agreement of use.
do it now!
Download Fix
do it now!
Download Fix
Compatible with Microsoft Windows Compatible with OS X
Still having problems?
If you failed to fix your error using Reimage, reach our support team for help. Please, let us know all details that you think we should know about your problem.
Reimage - a patented specialized Windows repair program. It will diagnose your damaged PC. It will scan all System Files, DLLs and Registry Keys that have been damaged by security threats.Reimage - a patented specialized Mac OS X repair program. It will diagnose your damaged computer. It will scan all System Files and Registry Keys that have been damaged by security threats.
This patented repair process uses a database of 25 million components that can replace any damaged or missing file on user's computer.
To repair damaged system, you have to purchase the licensed version of Reimage malware removal tool.
Press mentions on Reimage

About the author

Olivia Morelli
Olivia Morelli - PC & Mac repair expert

Olivia Morelli is a young, but a perspicacious IT expert who is currently just a year away from a Bachelor’s Degree in Software Systems. Her primary passion is cyber security, however, thanks to her detailed understanding of computer networks, operating systems and hardware, she can find a fix for any PC or Mac issue...

Contact Olivia Morelli
About the company Esolutions

What you can add more about the problem: "How to Fix Dllhost.exe Application Error?"