What is OfferCore

OfferCore is a so-called bundler meant to distribute both unwanted software (adware) and malware. As investigation showed, OfferCore is designed to launch the installation of Furk Ultra, which is a hack program developed for a popular videogame called Roblox. Whilst such a hack actually exists and can be downloaded for free, OfferCore seems to drop only a text file named “Last_Step” containing a link to a malware file. In other words, it does not install the cheating software for Roblox as expected by users. Note that even official gaming hacks fall into the category of unwanted or dangerous software. Repacked software and other types of free installers can also promote a list of additional programs like adware or browser hijackers. This is why it is important to scan your system for malware and delete the traces of OfferCore as soon as possible. We will help you to do it in our article below.

How OfferCore infected your computer

The way OfferCore could be launched on your system is more likely intentional. Users could be searching for the previously-mentioned Roblox hack or any other free software around the web. Therefore, they could download a fake installer that did not bring what it had to. Most often, however, bundlers install the coveted program but also inclined to bring additional software as well. Therefore, users should check the setup for promotional offers and deselect them, if necessary. Usually, they are hidden inside of “Advanced” or “Custom” sections or represented as a separate page with the “Decline” or “Accept” buttons to click on. Our advice is to avoid downloading software from suspicious websites since they can be bundled with unwanted or even malicious programs. Be careful and do not trust everything you see on the web. You can also read our manual below to learn more about protecting yourself against such threats in the future.

  1. Download OfferCore Removal Tool
  2. Remove/Uninstall OfferCore from Control Panel and Applications
  3. Remove OfferCore extensions from browsers
  4. Reset browser search and homepage settings
  5. Block OfferCore search redirects
  6. How to protect from threats like OfferCore

Download Removal Tool for Windows

Download SpyHunter

compatible with microsoft

To remove OfferCore completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of OfferCore and several millions of other adware, hijackers, toolbars.The trial version of SpyHunter offers virus scan and 1-time removal for FREE.

Download Removal Tool for Mac

Download CleanMyMac

To remove OfferCore completely, we recommend you to use CleanMyMac. It can help you remove files, folders, and registry keys of OfferCore and uninstall hijackers, toolbars, and unwanted add-ons from browsers.

Remove OfferCore manually for free

Here is the manual step-by-step tutorial for full OfferCore removal from your computer. This works 99% and was checked with the latest versions of the OfferCore installer on operating systems with the latest updates and browser versions.

Remove OfferCore from Control Panel or Applications

To start removing OfferCore you should uninstall it using Control Panel. It can be present by different names – “OfferCore”. It should uninstall correctly, however, we recommend you to use IObit Uninstaller to clean leftover items after uninstalling. Here are instructions for Windows XP, Windows 7, Windows 8, Windows 10, and Mac.

Remove OfferCore from Mac:

  1. In the Finder sidebar, click Applications.
  2. OfferCore might have an Uninstaller.
  3. Otherwise, drag OfferCore from the Applications folder to the Trash (located at the end of the Dock).
  4. Then choose Finder > Empty Trash.

Remove OfferCore from Windows XP:

  1. Click on Start button.
  2. Choose Control Panel.
  3. Click Add or Remove Programs.
  4. Find OfferCore or other recently installed suspicious program.
  5. Click Uninstall.

Remove OfferCore from Windows 7:

  1. Click Start button.
  2. Then go to Control Panel.
  3. Click Uninstall a Program.
  4. Find OfferCore or other recently installed suspicious program and click Uninstall.

Remove OfferCore from Windows 8:

  1. Hover mouse pointer to the bottom-right corner to see Menu.
  2. Click Search.
  3. After that click Apps.
  4. Then Control Panel.
  5. Click Uninstall a Program under Programs.
  6. Find OfferCore or other recently installed suspicious program, click Uninstall.

Remove OfferCore from Windows 10:

There are 2 ways to uninstall OfferCore from Windows 10

Way one
  1. Click on the Start button.
  2. In opened menu choose Settings.
  3. Click on the System tile.
  4. Click Apps & features and locate OfferCore or other recently installed suspicious program in the list.
  5. Click on it and then click Uninstall button near it.
Way two (classic)
  1. Right-click on the Start button.
  2. In opened menu choose Programs and Features.
  3. Locate OfferCore or other recently installed suspicious program in the list.
  4. Click on it and then click Uninstall button above.

Cannot uninstall OfferCore

In some cases, OfferCore won’t uninstall and gives you a message that “You do not have sufficient access to uninstall OfferCore. Please, contact your system administrator” when you try to remove it from Control Panel or “Access denied” error when removing the OfferCore folder and files. This happens because the process or service does not allow you to do it. In this case, I will recommend you to use SpyHunter 5 or Malwarebytes or uninstall OfferCore in Safe Mode. To boot in Safe Mode do the following:

  1. Reboot your computer.
  2. While it starts booting press F8 button.
  3. This will open Advanced Boot Options menu.
  4. Choose Safe Mode and wait until Windows loads.
  5. Go to Control Panel > Uninstall a program and remove OfferCore or other recently installed suspicious program

>> See detailed instructions and video tutorial on how to boot in Safe Mode

and for Mac:

If you can’t uninstall OfferCore using instructions above, or it keeps coming back, you can use free AppCleaner for Mac to remove all residual data and libraries of OfferCore. Follow instructions below:

  1. Download free AppCleaner.
  2. Drag OfferCore from Applications folder to AppCleaner window.
  3. Choose files and folders you want to remove along with OfferCore.
  4. Click Delete button.

Remove malicious add-ons from your browsers

Uninstalling OfferCore from Control Panel often does not bring the desired effect. It sometimes has browser extension and it may still be active in Safari, Google Chrome, and Mozilla Firefox. Here are instructions on how to remove OfferCore related extensions from your browsers manually.


  1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
  2. Click Extensions tab.
  3. Find OfferCore extension.
  4. Click Uninstall button to remove it.

Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://extensions.
  3. Find OfferCore extension.
  4. Click the trash can icon to remove them.
  5. Also remove other suspicious extensions from the list.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:addons.
  3. Choose OfferCore extension.
  4. Click Disable or Remove button.
  5. Remove all suspicious extensions from the list.

Internet Explorer (9, 10, 11):

Note: There is no feature to remove browser extensions from browser in latest version of Internet Explorer. To remove OfferCore from Internet Explorer, please, perform instructions for uninstalling program from Control Panel. To disable OfferCore, please, do the following:

  1. Open Internet Explorer.
  2. Click on gear/asterisk icon in the top-right corner.
  3. In opened menu Manage Add-ons.
  4. Select Toolbars and Extensions.
  5. Click Disable or OfferCore extension.
  6. Also disable other suspicious extensions from the list.

Opera Browser:

Generally, OfferCore does not install in Opera browser however you can always double check. Do the following:

  1. Start Opera browser.
  2. Go to Tools > Extensions > Manage Extensions.
  3. Find OfferCore extension.
  4. Click Uninstall button.
  5. Also remove other suspicious extensions from the list.

How to block ads and pop-ups from OfferCore

OfferCore push notifications, in most cases, are caused by a program installed on your PC or add-on installed in browsers. However, sometimes it can appear on a clean computer when visiting a malicious website, using an advertising script. Also, apps that generate “OfferCore” ads and banners are themselves installed from pop-ups. To protect your PC and browsers from phishing websites, pop-up ads, banners, malicious scripts it is recommended to use AdGuard. Download free trial here:

Download AdGuard for Windows Download AdGuard for Mac

Final tips

Be careful surfing the internet and downloading software, as programs, like OfferCore, may become a real headache as they are hard to remove and break your privacy. To keep safe from such threats we recommend you always use antivirus and one of the anti-malware programs available on the market. One of the best anti-spyware and anti-malware programs is SpyHunter 5. It can protect your PC from threats, like OfferCore.

Previous articleHow to remove SLAM Ransomware and decrypt .SLAM files
Next articleHow to remove Find-it.pro
James Kramer
Hello, I'm James. My website Bugsfighter.com, a culmination of a decade's journey in the realms of computer troubleshooting, software testing, and development. My mission here is to offer you comprehensive, yet user-friendly guides across a spectrum of topics in this niche. Should you encounter any challenges with the software or the methodologies I endorse, please know that I am readily accessible for assistance. For any inquiries or further communication, feel free to reach out through the 'Contacts' page. Your journey towards seamless computing starts here