How to Remove Pop-Ups on Mac

Meta description: If pop-ups keep appearing on your Mac, Kudu can help clean adware traces and browser junk.

What Causes This?

Most pop-ups on a Mac are caused by adware, spammy browser extensions, or website notification permissions that were allowed by mistake. In some cases, the issue comes from a browser setting change, a fake “update” installer, or unwanted apps that keep reopening ads in the background.

If pop-ups appear even when you are not actively browsing, that usually points to adware or a suspicious login item rather than a normal website ad. Browser junk, cached data, and leftover files can also keep the problem coming back after you close the window.

Common Symptoms

• New tabs or pop-up windows open on their own in Safari, Chrome, or Firefox
• You see fake virus alerts, prize messages, or “your Mac is infected” warnings
• Your homepage or default search engine changes without permission
• Browser notifications keep appearing on the desktop from unfamiliar sites
• The Mac feels slower, especially when the browser is open

How to Fix It Manually

1. Close the browser and force quit suspicious apps

   • Press Command + Option + Esc to open Force Quit Applications.
   • Select Safari, Chrome, Firefox, or any app you do not recognize, then click Force Quit.
   • If pop-ups keep reappearing, restart your Mac and continue with the steps below.

2. Remove suspicious applications

   • Open Finder > Applications.
   • Look for apps you did not intentionally install, especially “cleaner,” “search,” “security,” or “helper” apps.
   • Drag suspicious apps to the Trash.
   • Then right-click the Trash and choose Empty Trash.

3. Check Login Items and background permissions

   • Open Apple menu > System Settings > General > Login Items.
   • Under Open at Login, remove anything unfamiliar by selecting it and clicking the minus button.
   • Also review Allow in the Background and turn off anything suspicious or unnecessary.

4. Remove bad browser extensions

   • Safari: Open Safari > Settings > Extensions. Uninstall anything you do not recognize.
   • Chrome: Open Chrome > click the three-dot menu > Extensions > Manage Extensions. Remove suspicious extensions.
   • Firefox: Open Firefox > menu button > Add-ons and themes > Extensions. Remove anything unwanted.
   • Restart the browser after removing extensions.

5. Block notification spam

   • Safari notifications: Open System Settings > Notifications and review browser-related notification permissions.
   • In Safari, go to Settings > Websites > Notifications and deny unknown sites.
   • In Chrome, open Settings > Privacy and security > Site Settings > Notifications, then remove or block suspicious sites.
   • In Firefox, open Settings > search for “Notifications” > Settings, then remove unwanted sites.

6. Reset browser settings and clear website data

   • Safari: Open Safari > Settings > Privacy > Manage Website Data > Remove All.
   • Chrome: Open Settings > Reset settings > Restore settings to their original defaults.
   • Firefox: Type about:support in the address bar and use Refresh Firefox.
   • This removes stored site data and settings that may be triggering pop-ups.

7. Check for profiles you did not install

   • Open System Settings and search for Profiles.
   • If a Profiles section appears, open it and review any configuration profiles.
   • Remove profiles you do not recognize, especially ones related to browser settings, search providers, or device management.

Fix It Automatically with Kudu

If you do not want to hunt through browser settings and leftover junk files manually, Kudu can help clean adware traces, browser clutter, and other unwanted items that cause repeated pop-ups. It gives you a faster way to find what is causing the problem and remove it safely.

Download Kudu Free →