Pop-Up Ads or Unwanted Browser Windows

1. Run a browser cleaner: 

• Many browsers have built-in tools or extensions to help.
• Chrome: Go to Settings > Reset settings > Clean up computer.
• Firefox: Go to Help > More troubleshooting information > Refresh Firefox.

2. Remove suspicious browser extensions: 

• Most unwanted pop-ups come from bad browser extensions.
• Chrome: Type chrome://extensions into the address bar.
• Firefox: Type about:addons into the address bar.
• Edge: Click the three dots menu > Extensions. 

3. Use a reputable ad blocker:

•  Install a well-known ad-blocking extension (like uBlock Origin) to prevent most pop-ups.
• Disable or remove any extensions you don't recognize or trust.