How to remove MasterSpin (Mac)

What is MasterSpin

MasterSpin is a type of adware designed to generate intrusive advertisements on macOS devices. This malicious software inundates users with pop-ups, banners, and coupons that often lead to deceptive or harmful content. Commonly, it can direct users to phishing websites, technical support scams, and other fraudulent pages aimed at stealing sensitive information. In addition to compromising user privacy, MasterSpin can significantly degrade system performance by causing slowdowns and high CPU usage. Its installation typically occurs through bundled software or deceptive ads, making it crucial for users to remain vigilant during software installations. Once infected, immediate removal is recommended using reliable antivirus tools like Combo Cleaner to ensure a clean system. Effective prevention strategies include downloading software only from official sources and avoiding suspicious links or pop-ups.

How MasterSpin infects Mac computers

MasterSpin adware typically infects Mac systems through deceptive methods, primarily bundled with other software during installation processes. Users often inadvertently install MasterSpin by selecting default installation settings, which may conceal options for opting out of additional bundled applications. Additionally, it can be distributed via questionable download sources, such as peer-to-peer networks, torrent files, or unreliable third-party websites that promote free software. Malicious pop-up ads and misleading advertisements can also serve as vectors for the installation of MasterSpin, tricking users into clicking on links that initiate the download. Once installed, this adware generates intrusive ads and may collect sensitive browsing data, leading to potential privacy issues and diminished system performance. To avoid such infections, users should exercise caution during installations, opting for custom settings and avoiding suspicious downloads.

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

Remove MasterSpin manually for free

Note: MasterSpin sets up to start on macOS 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 “MasterSpin” entry. Select it, and click the “-“ (minus) button to remove it.

Note 2: MasterSpin 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 MasterSpin in the list.
3. Click Force Quit button.

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

Remove MasterSpin from Applications

Remove MasterSpin from Mac:

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

Cannot uninstall MasterSpin

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

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

Remove MasterSpin add-on from your browsers

Removing MasterSpin 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 MasterSpin 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 MasterSpin 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 MasterSpin 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 MasterSpin extension.
4. Click Disable or Remove button.

Reset browser settings

To finish MasterSpin 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 the 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 MasterSpin


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


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

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 MasterSpin in browsers.

Download AdGuard for Mac

How to protect Mac OSX from adware, like MasterSpin

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