What is UltimateUser

UltimateUser is a potentially unwanted program (PUP) classified as adware, a type of unwanted software that infiltrates computer systems with the primary intention of inundating users with intrusive and often irrelevant advertisements. It is a malicious program that hijacks your browser homepage and search engine, displaying unwanted advertisements not originating from the sites you are browsing. UltimateUser uses a browser extension or program to inject advertisements into websites you visit and redirects your browser search queries. When installed on a computer, the UltimateUser browser hijacker will redirect your browser search queries through UltimateUser Search, which will redirect to search result pages from search.yahoo.com. This is most likely done to generate advertising revenue by using Yahoo Search for its search results.

ultimateuser adware mac

How UltimateUser infects Mac computers

UltimateUser is installed by the users, whether that is knowingly or not. Often, this type of program is offered through advertisements or bundled with other software, leaving the user puzzled about where this software came from. Unfortunately, some free downloads do not adequately disclose that other software will also be installed and you may find that you have installed UltimateUser without your knowledge Users who download free or pirated software from unreliable sources can unwittingly consent to installing adware as part of the software package. This happens during the installation process, where users may not realize that adware is included in the package they are installing. Users may also encounter deceptive online ads or pop-ups that promote software, claiming it’s essential for system performance, security, or other reasons. Clicking on these ads or download buttons can lead to the unintentional installation of adware like UltimateUser.

  1. Download UltimateUser Removal Tool
  2. Remove UltimateUser from Login Items
  3. Remove/Uninstall UltimateUser from Applications
  4. Remove UltimateUser from browsers
  5. Reset browser settings
  6. Remove UltimateUser files and folders
  7. Block UltimateUser ads and pop-ups
  8. How to protect from threats, like UltimateUser

Download UltimateUser Removal Tool

Download Spyhunter for Mac

To remove UltimateUser completely, we recommend you to use Spyhunter for Mac. It can help you remove files, folders, and registry keys of UltimateUser and uninstall hijackers, toolbars, and unwanted add-ons from the Safari browser. The trial version of Spyhunter for Mac offers virus scan and 1-time removal for FREE.

Alternative Removal Tool

Download CleanMyMac

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

Remove UltimateUser manually for free

Note: UltimateUser sets up to start on Mac OS startup. Therefore, before starting the removal, perform these steps:

  1. Open System Preferences, choose Users & Groups.
  2. Choose your account (set up as Current User).
  3. Click Login Items tab.
  4. Find “UltimateUser” entry. Select it, and click the “-“ (minus) button to remove it.

Note 2: UltimateUser won’t quit just by closing it, therefor use Force Quit to end the process.

  1. Press 3 buttons at the same time: Option, Command, and Esc (Escape). This is similar to Control-Alt-Delete on a Windows PC.
  2. Choose UltimateUser in the list.
  3. Click Force Quit button.

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

Remove UltimateUser from Applications

Remove UltimateUser from Mac:

  1. In the Finder sidebar, click Applications.
  2. UltimateUser might have an Uninstaller. If you see Uninstall UltimateUser or UltimateUser Uninstaller, double-click it and follow the onscreen instructions.
  3. Otherwise, drag UltimateUser from the Applications folder to the Trash (located at the end of the Dock).
  4. Then choose Finder > Empty Trash.

Cannot uninstall UltimateUser

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

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

Remove UltimateUser add-on from your browsers

Removing UltimateUser from Applications often does not bring the desired effect. It is a browser extension and it may still be active in Google Chrome and Mozilla Firefox. Here are instructions on how to remove the UltimateUser extension from your browsers manually.

Safari:

  1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
  2. Click Extensions tab.
  3. Find UltimateUser 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 UltimateUser extension.
  4. Click the trash can icon to remove it.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:addons.
  3. Choose UltimateUser extension.
  4. Click Disable or Remove button.

Reset browser settings

To finish UltimateUser removal reset your browser settings to make sure, there are no leftover items in browser folders.

Reset Safari:

  1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
  2. Go to the Privacy section of Safari’s preferences.
  3. Click Remove All Website Data button.
  4. In opened window click Remove Now button to remove data stored by websites in Safari.
  5. Go to the Advanced section of Safari’s preferences.
  6. Click the Show Develop menu in menu bar option.
  7. In the menu click Develop and select Empty Caches from this menu.
  8. Again, go to Safari menu and choose Clear History….
  9. Choose to clear all history and click Clear History button.

Reset Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://settings.
  3. Scroll down and find Show advanced settings link.
  4. Click on it and scroll down to the bottom again.
  5. Click Reset settings button and click Reset to confirm.

Reset Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:support.
  3. Click Refresh Firefox… button.
  4. Click Refresh Firefox to confirm.

Remove following files and folders of UltimateUser


~/Library/Application Support/.[random_string]/Services/com.UltimateUser.service.app
~/Library/LaunchAgents/com.UltimateUser.service.plist
/Library/Application Support/.[random_string]/System/com.UltimateUser.system
/Library/LaunchDaemons/com.UltimateUser.system.plist

Download AdGuard for Mac to block malicious pop-ups, that promote UltimateUser

AdGuard is the best ad-blocker, internet filtering, and internet security application for macOS. It can cut out unwanted banners from site pages, block pop-ups, stop redirects, and prevent users from visiting potentially dangerous resources. Use it to stop ads promoting UltimateUser in browsers.

adguard for mac

Download AdGuard for Mac

How to protect Mac OSX from adware, like UltimateUser

malwarebytes for mac

Mac OSX is known to be one of the safest operating systems, and for a long time, there was no need for antivirus products for Mac. But with the growing popularity of Mac computers and notebooks and evolving technology, viruses, trojans, adware, toolbars, hijackers, and other malware paved the way for Mac users. We recommend you to use one of the best anti-malware for Mac available – Malwarebytes for Mac.

Download Malwarebytes for Mac
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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