“Cat.exe has stopped working” Virus Removal

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. 

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This page aims to help you remove “Cat.exe has stopped working” Virus. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

If you have found this article while researching the topic “”Cat.exe has stopped working” Virus”, you might have experienced some disturbance connected to some probably unwanted and/or intrusively popping up ads. Such advertisements (pop-ups and banners) could appear on your monitor while you are surfing the Internet, whatever browser app you are using. Unfortunately, even the most common and secure ones can be subject of this program’s infections: Firefox, Chrome and Explorer. The possible reason for all this advertising going on inside your browsers is the contamination of your device with an Adware-type program called “Cat.exe has stopped working” Virus. Provided that this explanation seems all about your particular case, your device is likely to have caught “Cat.exe has stopped working” Virus, and you really need to remove it. The information we are going to share with you could really be useful; especially if you need to find out more about the effects of your current ad-related issues. In order to further assist you, we have attached a Removal Guide below for you.

Generally speaking about Adware:

Adware as a term is used to describe the ad-displaying programs that are designed to produce ads in many forms while you are browsing the web. Some Adware-like software could also be able to cause some redirecting processes: your search requests to different web pages might actually send you to probably suspicious web sites. Because of all the possibilities above (especially the redirection) Adware could often be accepted as rather questionable. Some of its other sometimes intrusive features are its capability of collecting details about your search requests (of, course without your direct consent) and make the stream of the displayed pop-ups similar to the requests you have recently made. On the contrary, one program, which is malicious indeed, is likely to commit some really serious crimes: steal sensitive account credentials and use them; or even lock up some of your important data. In fact, “Cat.exe has stopped working” Virus is completely unlike any virus as it can never do such horrible things. This program is only capable of advertising products and services via its sometimes disturbing advertisements, but really of nothing more.

The ways Adware normally infects your PC:

Here we have gathered information about the possible manners, in which “Cat.exe has stopped working” Virus could become incorporated into your PC:

  • This ad-displaying program might get into your device from a program bundle (containing freeware in most of the cases). Actually, this way of spreading Adware is legal. Normally, such Adware-caused campaigns can earn sufficient amount of money for the parties involved. In fact, both programmers and producers earn a lot from these practices – the first group makes money based on the amount of ads seen and clicked on by users, whereas the second gains popularity for their goods and, therefore, more customers.
  • Spreading Adware is also possible via placing such ad-inflicting programs on different interesting websites and platforms. When you go to such a site, the result you may get infected with an Adware version instantly.

Is it possible to avoid programs like “Cat.exe has stopped working”?

Yes, and it is in fact easy. Maybe the first thing that comes to your mind is to stop downloading free software and stop going to suspicious web pages. In spite of that, it’s much easier said than done and we will let you know how to still use bundles and stay Adware free:

  • To begin with – try to download bundles only from web pages with a good reputation to make sure there are no serious threats lurking inside these bundles.
  • Then, when you have already downloaded a given bundle and you are ready to use it, just be particularly careful with the installation process you will perform.
  • When you see the installer opening in front of you go through all the menus there, read the End-User Agreement with great caution, and simply select a secure installation mode: the “Advanced”, the Customized”  or  the “Manual” one.
  • After that, simply select the needed programs from the list of the installed-to-be, and deselect the ones you will not need, won’t use or just the ones that look suspicious to you.

Is the removal process possible when it comes to Adware versions like “Cat.exe has stopped working” Virus?

Trust us and choose our tested Removal Guide to help you achieve this purpose. We have included all the necessary instructions and it is supposed to work against Adware of this sort.


Name “Cat.exe has stopped working”
Type  Adware/Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Too many ads, such as popups and banners, might disturb your browsing.
Distribution Method Free software mixtures (bundles) mostly. Also found inside web pages, torrents, etc.
Detection Tool

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.

“Cat.exe has stopped working” Virus Removal

If you are a Windows user, continue with the guide below.

If you are a Mac user, please use our How to remove Ads on Mac guide.

If you are an Android user, please use our Android Malware Removal guide.


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 (the “Details” Tab on Win 8 and 10). 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: https://howtoremove.guide/online-virus-scanner/

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.

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.


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.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

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 “Cat.exe has stopped working” Virus 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 “Cat.exe has stopped working” Virus from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove “Cat.exe has stopped working” Virus 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.


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.

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 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

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!

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