What is Checkup01.biz?

Checkup01.biz (or Checkup02.biz, Checkup03.biz, etc.) is an advertising domain that aims to distribute a huge amount of junk content. The main symptom of having Checkup01.biz adware on your device is uncontrollable pop-ups in your browser as well as forcible redirections. Checkup01.biz tries to convince users to click or tap the Allow button on a “Show notifications” dialog box. Once the user clicks the Allow button, it begins to spread a huge amount of advertising content, including banners, coupons, pop-ups, and more. It is also worth noting that this may result in other potentially unwanted programs. Thus, we recommend you get rid of adware and remove Checkup01.biz pop-ups from your computer or mobile.

Recommended Anti-malware tools:

The easiest and modern way of removing pop-ups, trojans, ransomware, or other viruses is to use automatic removal tools. See our Anti-malware tools below for further instructions.

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Step 1: Remove Checkup01.biz pop-up from browsers

Uninstall Checkup01.biz from Google Chrome:

  1. Open Google Chrome
  2. Push Alt + F.
  3. Click Tools.
  4. Choose Extensions.
  5. Find suspicious and unfamiliar extensions.
  6. Click the trash can icon to remove them.
  7. Push Alt + F.
  8. Select Settings.
  9. Type notifications into the search bar.
  10. Select Content settings.
  11. Select Notifications.
  12. Find Checkup01.biz in the Allow list.
  13. Click on three dots next to Checkup01.biz and select Remove.

Learn more about removing extensions from Chrome.

Remove Checkup01.biz from Mozilla Firefox:

  1. Open Firefox.
  2. Push Shift + Ctrl + A.
  3. Choose Checkup01.biz.
  4. Click Disable or Remove button.

Learn more about removing extensions from Firefox.

Remove Checkup01.biz from Microsoft Edge:

  1. Press Settings and more button
  2. Choose and Click on Extensions
  3. Find Checkup01.biz extension and click settings
  4. Press Uninstall button
  5. Start Edge again

Learn more about removing extensions from Edge.

Remove Checkup01.biz from Internet Explorer:

  1. Open IE.
  2. Push Alt + T.
  3. Click Manage Add-ons.
  4. Select Toolbars and Extensions.
  5. Click Disable Checkup01.biz.
  6. Click More information link in the left-bottom corner.
  7. Click Remove button.
  8. If this button is grayed out – perform alternative steps.

Learn more about removing extensions from IE.

Remove Checkup01.biz from Opera:

  1. Launch Opera and select Settings.
  2. Scroll down to the Privacy and security section and click Site Settings
  3. Go to Notifications to see the sites whose notification permissions you’ve already allowed or denied.
  4. Find Checkup01.biz and block it

Learn more about removing extensions from IE.

Remove Checkup01.biz pop-up from Chrome on Android:

  1. Open the Chrome app.
  2. To the right of the address bar, tap More.
  3. Choose and open Settings
  4. Tap Site settings and then find Checkup01.biz.
  5. Turn of Checkup01.biz pop-up from Allowed to Block.

Learn more about removing viruses from Android.


If you still got that problem, most likely there is a rogue application that causes Checkup01.biz pop-ups and redirects installed on your system. To finally get rid of Checkup01.biz adware, you should remove all recent suspicious programs that you are sure you didn’t install.

Step 2: Remove Checkup01.biz pop-up from system

Windows XP:

  1. Click Start.
  2. Control Panel.
  3. Then click Add or Remove Programs.
  4. Find the app.
  5. Click Uninstall.

Learn more about uninstallation of programs in Windows XP.

Windows 7/Windows Vista:

  1. Click Start.
  2. Then Control Panel.
  3. Click Uninstall a Program.
  4. Find the app and click Uninstall.

Learn more about uninstallation of programs in Windows 7.

Windows 8/Windows 8.1:

  1. Open the Menu.
  2. Click Search.
  3. After that click Apps.
  4. Then Control Panel.
  5. Then as in Windows 7, click Uninstall a Program under Programs.
  6. Find the app, select it and click Uninstall.

Learn more about uninstallation of programs in Windows 8 (8.1).

Windows 10:

  1. Click on the Start button (or press the Windows key) to open the Start menu, click on the Settings at the top.
  2. Click on Apps & features on the left menu.
  3. On the right side, locate the app and click it, then click on the Uninstall button.
  4. Click on Uninstall to confirm.

Learn more about uninstallation of programs in Windows 10

Note: If you can’t find required program, sort programs by date in Control panel and search for last installed programs.

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