How to Remove Adware from Windows (Pop-ups & Ads Fix)

Adware is software that floods you with advertising — pop-ups, banners injected into web pages, redirects, and sometimes desktop notifications. It usually piggybacks on free software installers or arrives as a browser extension. While most adware isn’t as dangerous as a trojan, it tracks your browsing, slows your machine, and can lead you to genuinely malicious sites. Here’s how to remove it from Windows step by step.

Signs of an adware infection

• Pop-up ads appear even when no browser is open, or on sites that normally have none.
• New tabs open by themselves with ads or “you’ve won” pages.
• Your browser is slower, with extra toolbars or a search bar you didn’t add.
• Desktop notifications push ads or fake virus warnings.

Step 1 — Uninstall suspicious programs

Adware often installs a Windows program alongside the browser junk.

1. Open Settings → Apps → Installed apps.
2. Sort by install date and look at what arrived around the time the ads started.
3. Uninstall anything you don’t recognize — especially “savings,” “coupon,” “deals,” media “players,” or unfamiliar utilities.

If a program refuses to uninstall, note its name and continue; the scan in Step 4 should handle it.

Step 2 — Remove adware browser extensions

Open your browser’s extensions page and remove anything unfamiliar:

• Chrome / Edge: Menu → Extensions → Manage extensions → remove unknown items.
• Firefox: Menu → Add-ons and themes → Extensions → remove what you didn’t install.

Pay special attention to extensions claiming to “block ads,” “save coupons,” or “enhance search” that you don’t remember adding — these are common adware vehicles.

Step 3 — Revoke notification permissions and clear browsing data

A lot of “pop-ups” are actually website notifications you were tricked into allowing.

• Go to Settings → Privacy and security → Site settings → Notifications (Chrome/Edge) or Settings → Privacy & Security → Permissions → Notifications (Firefox).
• Remove or block any site you don’t recognize.
• Then clear your cached files and cookies to strip out trackers.

Step 4 — Scan with free anti-adware tools

To remove the source and any leftovers, run dedicated free tools:

• AdwCleaner (by Malwarebytes) is built specifically for adware, PUPs, and toolbars, and it resets common browser hijacks.
• Malwarebytes Free catches adware that hides as a program.
• Microsoft Defender (Windows Security → Virus & threat protection → Full scan) covers the rest.

Quarantine everything detected, then reboot and confirm the ads are gone.

Step 5 — Reset the browser if ads persist

If ads still appear, reset the browser to clear stubborn settings:

• Chrome: Settings → Reset settings → Restore settings to their original defaults.
• Edge: Settings → Reset settings → Restore settings to their default values.
• Firefox: Help → More troubleshooting information → Refresh Firefox.

This keeps bookmarks and saved passwords but removes extensions and altered settings — usually the final blow to persistent adware.

Step 6 — Check the hosts file and scheduled tasks (advanced)

Some adware adds redirects via the Windows hosts file or creates a scheduled task to relaunch itself.

• Open Notepad as administrator and check C:\Windows\System32\drivers\etc\hosts for unexpected entries (a normal hosts file has only comments and maybe localhost lines).
• Open Task Scheduler and disable any task pointing to an unfamiliar program in a temp or random-named folder.

Only change these if you’re confident; when in doubt, let a scanner handle it.

How to avoid adware next time

• Download software only from official sites, and choose Custom/Advanced install to untick bundled extras.
• Avoid “free download” portals that wrap installers in their own bundler.
• Install browser extensions only from official stores and review their permissions.
• Keep Windows and your browser updated.

Adware is usually beatable with free tools and a careful cleanup. The steps above are written for Windows; if you’re seeing the same pop-ups and redirects on Apple hardware, follow our dedicated walkthrough on how to remove malware from a Mac instead, since login items and configuration profiles work differently on macOS. Once the ads stop, if any of them led you to type credentials into a fake page, change those passwords from a clean device — a password manager makes that fast and keeps every login unique.