“Enter a Product Key” “Virus” Removal

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you'll need to purchase its full version. More information about SpyHunter and steps to uninstall.

This page aims to help you remove Enter a Product Key “Virus”. These Enter a Product Key “Virus” removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Enter a Product Key “Virus” – a malicious virus or a harmless bloatware?

Many users have reported having problem with the appearance of various intrusive pop-up ads once they open their browser. Some people even begin to panic, thinking that their PC has been infected by some kind of a malicious and harmful program (like a Trojan or a Ransomware). However, if the only symptoms that something is not quite right are the annoying browser ads, then it is probably not a virus or some other dangerous software. Obstructive browser ads are typical feat of a certain type of program called adware. These are very widely spread throughout the internet. Still, as annoying and frustrating as they might be, adware are generally harmless for your system. Referring to them as viruses is incorrect. Virus programs illegal and are meant to harm your computer, steal data or money from you or spy on you. Adware applications don’t do that and most of them are perfectly, at least according to the law. This, however, does not make them wanted by most users, in any way. The reason for that is because they are just way too annoying and intrusive to have around. Besides they have little to no use for most people. A general term for such programs is Bloatware. Adware apps fall under this category. Enter a Product Key is one of the latest adware programs. A typical trait for this kind of software is that separate versions hardly ever have any substantial differences between each other. Therefore, what applies to one of them will, for the most part, apply to all the rest.

But what does Enter a Product Key do?

Obviously it generates ads. This is its main purpose. The ads usually have nothing useful for you. However, from them Enter a Product Key’s developers gain revenue via the pay-per-click method. This means that the more you click on the intrusive banners, box messages and pop-ups, the more money the person who’s created the annoying program will receive. There’s virtually no reason for you to do that. In fact, there are several reasons why you should not. You see, the majority of ads are not fake or dangerous. However, every now and then there’s some chance that you land on a add that may redirect you to an illegal or even malicious page that is infested with viruses. Furthermore, interacting with some of the pop-ups might even start downloading more unwanted content on your machine. This is rare and as we already said, most of the ads are okay. Still, even the legit ones will hardly have any use for you. That is why we advise our readers to simply avoid the obstructive pop-ups and quickly find a way to get rid of the unwanted software. For this we’ve provided you with a guide on how to uninstall and remove Enter a Product Key, just below this article.

How did I get Enter a Product Key on my PC?

 It should be clear by now that no one in their right mind would attempt to install such a program on their machine. That’s why adware’s developers have had to come up with other ways of distributing their products.

  • A very common method, that we’ve all heard about, are the spam e-mails. This one, however, is not overly effective. Spam messages usually go to the spam folder and no one really opens letters from that folder, do they? Still, you should always be careful even when checking your regular inbox. Sometimes a unwanted e-mail may get there. Therefore, make sure to always look at the title of the letter and the name of the sender first, before opening the message.
  • Another widely-spread method for Enter a Product Key distribution is via torrent files. It’s just so easy for everyone to upload whatever they want to a torrent or file-sharing site, that you can never be 100% sure that the downloadable content in such sites is legit and safe. We know that this will probably not be enough for you to stop using them. Therefore, at least try to pick torrents that look trustworthy, have good ratings and high number of downloads.
  • Probably the most effective way for Enter a Product Key distribution is the file-bundling. For the most part, this is a perfectly legal method and if an adware gets into your system via file-bundling, it is usually your not paying attention to the installation menu. When the intrusive software is bundled with another program, it gets installed along that other program. However, you can easily prevent this from happening. All you have to do is opt for the advanced/custom settings in the installation menu so that you are able to see all added installs. Once you have the list of add-ons in front of you, simply uncheck everything that you may not want getting on your machine once the installation of the main program has finished. Do that with every new program you install, because most of them (especially free or cheap ones) have something added, that you probably don’t need (or want). Just keep in mind that it is much easier to prevent the installation of Enter a Product Key that it is to have it uninstalled and removed aftwarwards.


Name Enter a Product Key
Type  Adware
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Opening your browser will result in your screen getting flooded with all sorts of intrusive ads (pop-ups, banners, box messages etc.)
Distribution Method There are many methods, however the most common and effective one is free program-bundling.
Detection Tool Enter a Product Key may be difficult to track down. Use SpyHunter – a professional parasite scanner – to make sure you find all files related to the infection.

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.


Enter a Product Key Removal

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

This was the first preparation.


To remove parasite, you may have to meddle with system files and registries. Making a mistake and deleting the wrong thing may damage your system.
Avoid this by using SpyHunter - a professional Parasite removal tool.

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you'll need to purchase its full version. More information about SpyHunter and steps to uninstall.

Reveal All Hidden Files and Folders.

  • Do not skip this  – Enter a Product Key may have hidden some of its files.

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.

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.


Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove Enter a Product Key from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Enter a Product Key from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Enter a Product Key from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.

  • At this point the threat is gone from Chrome, but complete the entire guide or it may reappear on a system reboot.


Press CTRL + SHIFT + ESC simultaneously. Go to the Processes Tab. Try to determine which ones are dangerous. Google them or ask us in the comments.


This is the most important and difficult part. If you delete the wrong file, it may damage your system irreversibly. If you can not do this,
>> Download SpyHunter - a professional parasite scanner and remover.

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you'll need to purchase its full version. More information about SpyHunter and steps to uninstall.

Right click on each of the problematic processes separately and select Open File LocationEnd the process after you open the folder, then delete the directories you were sent to.



Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show 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

Remember to leave us a comment if you run into any trouble!

  • Fedele Gallo

    I have suspicious IP’s in my localhost. You told me to comment to you if this happened

    • HowToRemove.Guide Team

      Hi Fedele,
      can you post them here as a comment or send us a screenshot of the file ?

  • HowToRemove.Guide Team

    Hi Owen,
    these IPs are fine. Our team researched them and they turned out to be legit.

    • Owen Lars

      Thanks for the quick reply!

      When you say they are “legit”, what do you mean? Are they third-parties, or something else? Not really concerned, just interested.

      • HowToRemove.Guide Team

        Hi again Owen,
        if you open your hosts.txt file just before the IPS you can see:
        # localhost name resolution is handled within DNS itself.
        # localhost
        # ::1 localhost is the loopback Internet protocol address also referred to as the “localhost.” The address is used to establish an IP connection to the same machine or computer being used by the end-user. The same convention is defined for computer’s that support IPv6 addressing using the connotation of ::1. Establishing a connection using the address is the most common practice. The loopback construct gives a computer or device capable of networking the capability to validate or establish the IP stack on the machine.