Step 1: Remove malicious programs
If you've bought or downloaded antivirus software, you can run the program to find and remove harmful programs.
You can also remove malware and other programs on your computer that you don't remember installing.
- In the bottom right corner of your screen, open Finder.
- On the left side of the box that appears, click Applications.
- Look for any programs you don't recognize. Then do one of these:
- Double-click Uninstall or Uninstaller, follow the onscreen steps.
- If you don't see these options, drag the icon from the Applications folder into the Trash.
- Empty your trash when you're done.
You can also try MalwareBytes, an anti-malware program that can find other malicious software that the Chrome Cleanup Tool might not remove. It's available for Mac computers, Windows computers, and mobile devices.
Step 2: Reset browser settings
After you have removed malicious programs from your computer, reset your Chrome browser settings. Your bookmarks and passwords won’t change, but you'll need to customize things like your startup page, search engine, and browser theme again.
- In the top-right corner of the browser window, click the Chrome menu .
- Select Settings.
- At the bottom, click Show advanced settings.
- Under the section "Reset settings," click Reset settings.
- In the dialog that appears, click Reset.
Stop unwanted ads, popups, or browser malware
If you're seeing popup ads that won't go away, or the homepage you set is gone, you may have unwanted software or malware installed on your computer. Here are some steps you can take to get rid of this program and block similar ones from getting installed in the future.
Look for malware and unwanted software
Changes could be caused by bad software known as malware. You can get malware from downloading files or visiting sites that aren’t secure. Here are some clues that a suspicious program is affecting Google Chrome: