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How to Remove the COM Surrogate Virus in 3 Easy Steps

Sam Boyd Sam Boyd

Short on time? Here’s how to remove the COM Surrogate virus:

  • 1. Scan Device — Run a full system scan with a high-quality antivirus (Norton is the best).
  • 2. Remove Virus — After the scan is complete, let the antivirus remove all instances of the COM Surrogate infection.
  • 3. Stay Protected — Protect yourself from further infections with a high-quality internet security package (again, Norton is the best).

COM Surrogate is a normal Windows process, but hackers use fake versions of it to infect a PC while avoiding detection. The COM Surrogate virus is one of the most common malware infections on Windows computers — it’s pretty dangerous, but getting it off of your PC actually isn’t very hard.

However, you should never try to delete the COM Surrogate virus manually. If you attempt to remove the virus manually, you risk causing permanent damage that can lead to Windows 10 failing completely.

The most efficient and secure way to remove the COM Surrogate virus is by installing a comprehensive antivirus suite. A good antivirus will not only quarantine and remove every instance of the COM Surrogate infection from your computer, but it will also ensure you remain safe from future threats with its real-time protection and scanning capabilities.

Quick Tip: Norton is the best tool for removing the COM Surrogate virus. You can get an affordable Norton plan for just $19.99 / year, and there’s a 60-day money-back guarantee on all purchases.

60-Days Risk-Free — Try Norton Now

Preliminary Step: Checking for a COM Surrogate Infection

This step is for advanced users who want help in understanding malware diagnostics. If you simply want to remove the COM Surrogate infection (and other malware), skip ahead to learn how.

If you want to check whether the COM Surrogate process running on your system is malware, you must first understand what the standard COM Surrogate process is.

COM is an acronym for Component Object Model and is related to dllhost.exe in your System32 folder. In simple terms, it’s a binary interface that communicates with different software and increases the software’s capabilities. For example, when a folder on your OS needs to draw thumbnails, it will request COM Surrogate to do just that. This is why COM Surrogate is referred to as “middleware”.

COM Surrogate is a pathway between applications, commands, and your operating system. It’s important for your computer’s everyday functioning. This is why hackers frequently disguise malware as middleware — they want to get access to your entire system.

That said, here’s how to know if you’re looking at an authentic instance of COM Surrogate or a dangerous piece of malware:

Bring up your Task Manager by hitting CTRL + Shift + ESC.

Preliminary Step: Checking for a COM Surrogate Infection

In the picture above, you can see COM Surrogate is running twice on the system. While this may look alarming, it’s not. It simply means multiple applications are using the middleware to help them communicate with the OS.

To confirm this, you can right-click on both instances and click Open File Location. If they go to a file called “dllhost.exe” in the System32 folder on the system, then it is unlikely they are malicious.

Preliminary Step: Checking for a COM Surrogate Infection

If the file is located anywhere other than dllhost.exe, then you have a virus and should follow my removal steps.

Step 1. Identify the COM Surrogate Virus With Your Antivirus (And Don’t Make the Problem Worse!)

IMPORTANT: Do not connect your cell phone, tablet, or USB drive to an infected computer. In doing so, you risk the virus replicating itself onto those devices.

Once you’ve downloaded a secure antivirus program, run a full disk scan on your computer. Even if you think you know where the infection started or you know where the suspicious .exe file is located, a full disk scan is best.

A full disk scan will detect, quarantine, and remove every copy of the COM Surrogate virus, as well as ensure that your device isn’t infected with any other malware, including spyware, rootkits, or worms that can often run undetected.

Remember: Run the full system scan until it’s finished. DO NOT cancel the scan when you see the virus appear on the infected file list. There’s no way of knowing how many other copies of it exist in your system.

The full scan can take anywhere from 1–4 hours, so sit tight because your antivirus needs to analyze every single file and process on your computer.

When your antivirus has alerted you that the scan is complete, every instance of malware on your system will be identified and quarantined — including the COM Surrogate virus.

60-Days Risk-Free — Try Norton Now

Step 2. Remove the COM Surrogate Virus Infection and Delete Any Other Infected Files

When your antivirus has identified and quarantined all of your compromised files, it will give you the option to delete them. Advanced users can go through the quarantined files and make sure there are no false positives before hitting the Delete button. But most users will just want to trust their antivirus software — if it’s been flagged as malware by a program like Norton, chances are you don’t want it on your device.

After you’ve removed all of the compromised files from your system, it’s a good idea to restart your computer. After you restart your device, run a second full disk scan to ensure your antivirus has removed all traces of the COM Surrogate infection. This may not take as long during the second scan — many antiviruses, including Norton, remember which files they have already scanned and are able to analyze your disk much more rapidly after the first full disk scan.

As before, be sure to let your antivirus finish its second scan. Once the scan is finished, and you’ve reviewed and deleted all of the compromised files in your quarantine, you can breathe a sigh of relief. Your device is 100% malware-free! For now…

Even though you’ve finished removing the COM Surrogate virus, there are still thousands of malware files out there that can infect your devices, compromise your online accounts, and spread through your Wi-Fi network.

60-Days Risk-Free — Try Norton Now

Step 3. Keep Your Device From Getting Re-Infected

Since the COM Surrogate virus has already infected you, you’ve witnessed first-hand how easy it is to get malware on your PC. New malware is released every day, and there’s also the risk of online data harvesting, identity theft, and public Wi-Fi hackers.

How can you keep your devices and data safe in today’s online world? There are several things you can do:

  • Download and install antivirus software — Reliable antivirus programs, including Norton 360, Bitdefender, and TotalAV, all come with comprehensive security features that can prevent you from downloading and installing malware. These antivirus programs had perfect malware detection rates in my tests and stopped trojans, rootkits, computer worms, adware, spyware, and more.
  • Regularly backup your personal files — Even if your system is compromised, regularly backing up your personal files will ensure you can reinstall Windows and remove any malware without losing data. Norton 360 Deluxe comes with 50 GB of cloud storage, so you can easily back up important files. If you’re in the US, you can choose a LifeLock plan and get up to 100 GB of cloud storage.
  • Turn on User Account Control (UAC) — UAC is a built-in security feature in Windows that prevents applications from making changes to your operating system without your permission. To turn on User Account Control:
    1. Open your computer’s Start menu and navigate to the Control Panel.
    2. Click System and Security.
    3. Click Change User Account Control settings.
    4. Drag the slider up to Always notify.
    5. Click OK.
    6. Click Yes on the pop-up that Windows issues.
  • Turn on Tamper Protection — Tamper protection is another security feature in Windows that prevents malware from modifying or disabling certain features, including your antivirus. To enable tamper protection:
    1. Type in Windows Security in your computer’s search bar and click Windows Security.
    2. Click Virus & threat protection.
    3. Under Virus & threat protection settings, click Manage settings.
    4. Scroll down until you see Tamper Protection and switch it to On.
  • Enable multi-factor authentication — Many services, including your Microsoft account, allow for multi-factor authentication. With multi-factor authentication enabled, these services require a second form of identification (such as a secondary email address or an authenticator app) before they allow you to log in. In other words, if hackers manage to compromise your email or password, they still won’t be able to access your accounts and distribute malware.
  • Keep your system software up to date — When developers find vulnerabilities in their software being exploited by hackers, they patch those vulnerabilities and send the patches to users in the form of software updates. However, with the number of devices, apps, and programs that most users are running these days, it can be tough to keep track of which programs need to be updated. One great tool to do this for you comes from the antivirus provider Avira — it lets you scan your PC for out-of-date software and automatically update it.
  • Download parental control software — If your kids have access to your computer, it’s a good idea to have comprehensive parental control software running. That’s because hackers often hide malware files in programs that claim to give kids advantages in games like Fortnite and Roblox. Decent parental control software like Qustodio will stop your kids from accessing suspicious websites containing these disguised malware files.
  • Don’t download from websites you don’t trust — You want to avoid downloading from websites you don’t recognize or trust. The vast majority of malware is delivered with seemingly legitimate software. A good antivirus program like Norton can help block most dangerous websites containing this software, but it’s a good idea to also stay vigilant. For example, if you don’t recognize a website, you should research it first and read reviews before downloading from it.
  • Avoid torrenting — Torrenting can come with several issues, but one of the most significant problems is that you risk infecting your computer with malware. Since torrenting is a form of peer-to-peer sharing (P2P), you’re downloading files directly from another user. In other words, it’s super easy to download malware from a shady user who has disguised their malware as a trustworthy file.
  • Avoid clicking on suspicious email attachments — Hackers often attach malware to deceptive emails. So if you receive an email from a sender you don’t recognize, don’t click on any attachments in that email. Your antivirus can help recognize malicious attachments by scanning emails and tagging suspicious files, and also by scanning all downloads before they can make changes on your computer. However, being careful when going through your email inbox is still a good idea.
  • Secure your wireless networks — Make sure your wireless networks are secure before you go online. You can do this by using a firewall, but you should also ensure your home Wi-Fi connection is password-protected. To do this, you need to check your router settings by visiting Unsecured networks are far more vulnerable since anyone can connect to them.
  • Use a top VPN — A top VPN like ExpressVPN masks your IP address behind a virtual one, meaning hackers won’t be able to intercept your data or launch man-in-the-middle attacks against you. This is especially important if you’re using public Wi-Fi networks — such as those in coffee shops — as hackers often monitor those Wi-Fi networks and steal data from anyone who uses them unprotected.
  • Use a decent ad blocker to avoid malicious pop-ups — A good ad blocker, like the one included in TotalAV, can stop you from receiving pop-ups that contain malicious file downloads. However, if you’re visiting a lot of shady websites or receiving a larger amount of pop-ups than usual, you might already have a malware infection and should also scan your computer using antivirus software.
  • Only use an admin account when you need to — When you’re logged into your computer’s administrator account, malware can install new software (such as additional viruses) and access previously restricted areas of your PC. So if you’re just browsing the web or doing day-to-day work, you don’t need to be logged into your administrator account. Only use your admin account when installing new software or important updates.
  • Use common sense — Ultimately, when browsing the internet or using your computer, you must be vigilant. If a website or file seems suspicious, it probably is. Similarly, if a website offers something that sounds too good to be true, it’s probably not a trustworthy offer. If you’re not tech-savvy, always double-check websites by doing your research before visiting or downloading from them, and make sure you’re running a comprehensive antivirus program like Norton before you do anything online.

Best Antivirus Programs to Remove COM Surrogate in 2022

Quick summary of the best antiviruses to remove COM Surrogate in 2022:

  • 🥇1. Norton — Best overall antivirus to remove COM Surrogate.
  • 🥈2. Bitdefender — Most lightweight antivirus to remove COM Surrogate.
  • 🥉3. TotalAV — Best cleanup tools after removing COM Surrogate.

🥇1. Norton — Best Overall Antivirus to Remove COM Surrogate

Best Antivirus Programs to Remove COM Surrogate in 2022
Norton is the best antivirus program in 2022. Its malware engine has perfect detection rates and uses advanced heuristics and machine learning to catch new and known malware threats. Norton also comes with an excellent range of additional features that all perform well and are straightforward to use. Norton’s additional features include:

  • Anti-phishing protection.
  • Smart firewall.
  • Privacy protection.
  • Webcam protection (Windows only).
  • Secure VPN (virtual private network).
  • Parental controls.
  • Cloud backup.
  • Dark web protection
  • Identity theft protection (US only).
  • And more…

Each of these features worked well in my tests. However, I particularly like Norton’s anti-phishing protections. Norton uses a browser extension called Safe Web, which prevents you from visiting dangerous web pages. The Safe Web extension detected every dangerous website I tried to visit, including those that the default protections in browsers such as Chrome, Firefox, Edge, and Safari missed.

I also really liked Safe Web’s “Isolation Mode” feature. When you visit a website containing sensitive information — such as a financial website — you can choose to put your web browser in an isolated mode that prevents malware or harmful web scripts from running and potentially stealing your information. This is essential protection if you’ve accidentally downloaded a malicious version of COM Surrogate.

Norton 360 has several different payment plans, but my favorite is Norton 360 Deluxe, which costs $49.99 / year. Norton 360 Deluxe offers coverage on up to 5 devices — which is ideal for a small household — and comes most of Norton features. Each of Norton’s plans comes with a 60-day money-back guarantee.

Visit Norton

🥈2. Bitdefender — Most Lightweight Antivirus to Remove COM Surrogate

Best Antivirus Programs to Remove COM Surrogate in 2022
Bitdefender is another excellent option for removing the COM Surrogate virus. It’s lightweight, feature-rich, and has perfect malware detection rates. I also really like how Bitdefender runs on a cloud-based scanning engine — meaning you can run the full system scan and still use your computer without any slowdown.

Bitdefender comes with:

  • Anti-phishing protection.
  • Secure web browser for safe online payments.
  • Advanced ransomware protection.
  • Password manager.
  • System optimization.
  • Parental controls.
  • VPN (virtual private network).
  • Webcam and microphone protection.
  • And more…

I particularly like the advanced ransomware protection. I ran several simulated ransomware attacks on my Windows 11 computer, and Bitdefender was able to identify every single one. Bitdefender restored every file affected by the ransomware, and when I opened those files — some of which were documents containing important information — they worked fine, and I could still access all of my data.

I also really like Bitdefender’s anti-phishing protection. I tried to visit the same dangerous websites I visited when I tested Norton, and Bitdefender was able to block every dangerous website (even sites that the default protections on Chrome, Edge, and Firefox missed).

Bitdefender comes with quite a few different payment plans, but I recommend Bitdefender Total Security. It costs $35.99 / year and includes all of Bitdefender’s features — including anti-phishing and ransomware protection. No matter which Bitdefender plan you choose, each one comes with a 30-day money-back guarantee.

Visit Bitdefender

🥉3. TotalAV — Best Cleanup Tools After Removing COM Surrogate

Best Antivirus Programs to Remove COM Surrogate in 2022
TotalAV has near-perfect malware detection rates, provides some of the best web protections around, and is really easy to use. It also comes with advanced security features like a VPN, password manager, data breach monitoring, and more.

TotalAV also has excellent system clean-up tools. They help you to optimize your computer’s performance by clearing out junk folders, finding and removing duplicate files, cleaning up your web browser, and more. Honestly, after you’ve removed the COM Surrogate virus, it’s a good idea to run TotalAV’s cleaner on your computer. For all you know, the malicious COM Surrogate file may have made changes to your system that will continue to slow down your computer even after removing it.

Like Norton and Bitdefender, TotalAV also has pretty good anti-phishing protection. It was able to detect and block more websites than the default protections in web browsers like Chrome and Firefox, and I really like how it uses its own AI-based detection system to recognize dangerous websites. Many competitors just use online databases.

TotalAV’s best-value plan is Internet Security, which costs $39.00 / year and covers 5 devices. All TotalAV plans include a 30-day money-back guarantee.

Visit TotalAV

Can I disable COM Surrogate?

You can’t disable COM Surrogate. It’s a core system function within Windows that will be called upon every time an application requests it.

I actually tested this by opening the Task Manager on my computer and clicking “End Task” on every instance of COM Surrogate. I then opened a folder in File Explorer and switched to Thumbnail View. As soon as I did this, COM Surrogate once again appeared on my task list.

This is normal, and it shouldn’t be interfered with. COM Surrogate is a part of dllhost.exe’s function and a required Windows background process.

If in doubt, follow this guide on how to remove malicious instances of COM Surrogate.

How do I turn off COM Surrogate?

Unfortunately, it’s impossible to turn off COM Surrogate. Since COM Surrogate is an essential process, even if you force-close it through the Windows Taskbar, Windows will just re-open it the next time it needs it. However, in most cases, there’s nothing to worry about when you see COM Surrogate running. That said, if you’re in doubt, you should check out our instructions on recognizing the malicious version of COM Surrogate and then scan your computer using a comprehensive antivirus scanner such as Norton.

Why does COM Surrogate keep popping up?

If you keep seeing COM Surrogate popping up in your Windows Task Manager, your operating system is calling it to help draw thumbnails or initiate other system commands. COM Surrogate is a form of middleware, so multiple processes within Windows can run it. However, if you’re receiving an actual pop-up that claims it’s COM Surrogate, it’s probably a malware infection. You should scan your computer using an antivirus program such as Norton.

Why does COM Surrogate keep crashing?

It’s totally normal for COM Surrogate to crash occasionally. COM Surrogate is a sacrificial process. In fact, surrogate means to “act in another’s place”.

For example, when you open a folder and switch to Thumbnail View, Windows fires a COM Surrogate to draw those thumbnails within File Explorer. If, for whatever reason, this process crashes, instead of having the entirety of File Explorer crash, only COM Surrogate will crash.

In other words, COM Surrogate crashing is a form of protection.

That being said, consistent crashes or system slow-downs may be the symptom of something more serious. Should COM Surrogate crash frequently, follow the above steps. Your computer may be infected.

Where is COM Surrogate located?

COM Surrogate is an internal process that is initiated by dllhost.exe — which is located in your System32 folder*.

COM Surrogate itself isn’t something you can find in your system files. Therefore, if you do come across “COMSurrogate.exe” or anything similar, your computer is probably infected with malware and you should check out the rest of my instructions for how to remove it.

*For the less tech-savvy users, the System32 folder is where Window’s most important .EXE and .DLL files are located. If you were to delete System32, Windows would no longer function.

Why is the COM Surrogate virus dangerous?

The COM Surrogate virus is dangerous because it can open a backdoor into your system. Hackers can use that backdoor to break into your computer and steal sensitive information. This can include:

  • Usernames
  • Email addresses
  • Passwords
  • Bank account details
  • Credit card information

The hacker will even be able to use the backdoor to download more malware onto your system. Trojans can also be used to hijack your operating system for botnets and cryptojacking malware. That’s why it’s imperative that you remove all instances of the COM Surrogate virus and any other malware that may have infected your system. If you don’t know how to remove a virus from your PC, then check out the rest of my guide for removing COM Surrogate from your computer.

How do I get rid of COM Surrogate in Windows 11?

If you’re seeing COM Surrogate running in Windows 11, it’s perfectly normal. COM Surrogate is a form of middleware that Windows uses to draw thumbnails, among other processes. However, since COM Surrogate is an essential process your computer relies on that can’t be closed, hackers have been known to disguise malware as COM Surrogate. If your computer is running more slowly than usual, or you experience a lot of pop-up ads all of a sudden, you may have a malicious version of COM Surrogate installed. You should follow our guide on recognizing the malicious version, then install a comprehensive antivirus program like Norton that can scan your Windows 11 machine for malware and remove any it finds — including the malicious files disguised as COM Surrogate.

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About the Author

Sam Boyd
Sam Boyd

About the Author

Sam Boyd is an avid tech fan with a keen interest in cybersecurity products and online safety. When he isn't researching the latest online threats, he enjoys chilling out with some video games and getting outside, exploring new parts of the world with his family.