Msiexec64.exe Removal (July 2019 Update)

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

Download SpyHunter Anti-Malware

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

How irritating is this problem? (5 votes, average: 5.00)

This page aims to help you remove Msiexec64.exe. Our removal instructions work for every version of Windows.

The Trojan Horse malware category is a tough one to deal with. Viruses that belong to this group are highly-dangerous, can cause all kinds of different harm and problems to both your PC and to your virtual identity and are also very difficult to detect due to their usual lack of any particular symptoms. That said, it’s still not impossible to deal with a Trojan and in the lines below, we will give you some useful tips and some crucial information regarding this malware type and regarding one particular example of the Trojan Horse family – a PC virus known under the name of Msiexec64.exe.

Msiexec64.exe is one of the newest Trojan Horse versions and though it was recently released, many users have already experienced its negative effects on their computers. This is why we have written this article – to help those of our readers who have had their PC systems infected by the noxious malware threat that Msiexec64.exe is. In case you too currently have this insidious piece of malicious software inside your computer, be sure to read everything that this article has to offer and then visit our removal guide for this Trojan. You can find the guide right below the main section of the article – make sure to follow the instructions that we have prepared for you and you should be able to manually eliminate the threat and restore your computer to its normal state.

How do Trojan Horse infections occur?

As is with most other forms of malware, Trojans, too, typically need some form of interaction from the end user in order to get activated inside their victims’ systems. Such interaction could be downloading an infected file attached to a spam e-mail, launching the installation of a fake update request or of a certain pirated piece of software, clicking on some hazardous web-link or on a misleading online ad or something similar. There are all sorts of methods for Trojan Horse distribution and what mos of them have in common is that, in order for the virus to actually infiltrate the user’s system, the user would have to make the mistake of interacting in some way with the content that carries the malware. We certainly cannot list here all the possible ways in which Msiexec64.exe or some other similar virus could get distributed but you got the idea – anything that you encounter online that looks questionable could be a Trojan Horse distribution tool. And if you interact with anything that carries a Trojan assuming that you are using an Administrator profile on your PC, the virus would also gain Administrator privileges after it gets activated. The thing, however, is that oftentimes the malware’s “carrier” would look safe and harmless at first, especially to a less experienced user. Hackers who create Trojans always try to distribute their viruses in a way that does not raise suspicion which is why a lot of uses get tricked into executing files or interacting with online content that is used to spread the virus.


Msiexec64.exe Removal



Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them. If you see a screen like this when you click Uninstall, choose NO:



Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

  • Remember this step – if you have reason to believe a bigger threat (like ransomware) is on your PC, check everything here.

Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

Type Regedit in the windows search field and press Enter.

Once inside, press CTRL and F together and type the virus’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

What problems could a Trojan cause

This particular category of malicious programs is notorious for its versatility – a typical Trojan can be used in a variety of different ways and many Trojans can even get reprogrammed remotely, after they have infected the user’s PC in case the cyber criminal needs the virus to carry a task different than the one it has initially been intended for. The most common Trojan Horse uses include system and data damage/corruption, cryptocurrency – mining through the infected machines, spying on the targeted user, stealing banking credentials, DDoS attacks, using the infected machine as a spam-bot and loading other viruses such as Ransomware inside the already infected machines. Those, however, were only several examples – there are many more examples of how such a insidious malware can be utilized but we can’t list them all here. Also, we can’t really tell you what Msiexec64.exe’s target would be in your particular case due to the fact that it’s purpose could probably get altered at any time.

Our advice for you

It is very difficult to detect a Trojan Horse virus without proper “equipment”. Most such infections do not really show many visible symptoms and even experienced users might not be able to notice the presence of such a malware on their PC. That is why, it is crucial that you always keep your system protected by a strong, high-quality security software such as an antivirus program that can detect most such threats. Also, since we already listed some of the more commonly used techniques for spreading Trojans, make sure to avoid any such content online that looks suspicious and could be potentially used for spreading Msiexec64.exe and other Trojan Horse infections throughout the Internet.


Name Msiexec64.exe
Type Trojan
Danger Level  High (Trojans are often used as a backdoor for Ransomware)
Symptoms  Trojans can cause all sorts of system disturbance which could help you detect them but oftentimes there might be an absolute lack of any visible symptoms.
Distribution Method Typical malware-distribution methods such as spam messages, malvertising, pirated software downloads, etc.
Detection Tool

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

Leave a Comment