What is FlexInterval?

FlexInterval is adware responsible for ads, deals, coupons, and pop-ups displayed in your Safari, Chrome, and Firefox. The adware usually gets installed on your device along with some free programs you might download from the Internet. Following infiltration, it makes adjustments to the system and browser settings so that your browser is filled with pesky pop-ups as well as constant redirects.
Moreover, adware tracks all information passing through your browser such as IP addresses, browser activity history, searching results, passwords, account details, and so on. Subsequently, all collected information is shared with third parties. To stop this and get rid of annoying pop-ups, you need to remove FlexInterval adware from your Mac.

Recommended Anti-malware tools:

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

Also, you can try to remove FlexInterval manually.

Alternative solution. Step 1: Remove FlexInterval from Mac

FlexInterval may not have the app associated with it in Applications. However, we recommend you to inspect the list of installed applications and remove unknown or suspicious ones. Look for FlexInterval or FlexInterval.app.

Mac OSX:

1. Open Finder
2. In the Finder sidebar, click Applications
3. If you see Uninstall FlexInterval or FlexInterval Uninstaller, double-click it and follow instructions
4. Drag unwanted application FlexInterval from the Applications folder to the Trash (located on the right side of the Dock)

Learn more about uninstallation of programs in Mac OSX

Step 2: Remove malicious entries from Profiles (Mac)

1. Open System Preferences.
2. Click on Profiles.
3. Click on unsigned and suspicious profiles on the left panel.
4. Click the minus button below to delete rogue settings.

Step 3: Remove FlexInterval from browsers

Safari:

1. Open Safari
2. Click Safari menu.
3. Choose Extensions.
4. Find FlexInterval or other suspicious extensions.
5. Click Uninstall button to remove it.

Learn more about removing extensions from Safari.

Google Chrome:

1. Open Google Chrome
2. Click the Chrome menu (3-dots icon) in the top right corner.
3. Click Tools.
4. Choose Extensions.
5. Find FlexInterval or other suspicious extensions.
6. Click the trash can icon to remove it.

Learn more about removing extensions from Chrome.

Mozilla Firefox:

1. Open Firefox.
2. Push Shift + Ctrl + A.
3. Choose FlexInterval or other suspicious extensions.
4. Click Disable or Remove button.

Learn more about removing extensions from Firefox.

Step 4: Resetting your browser search and homepage settings

Reset browser setting in Safari:

1. Open Safari.
2. Click on the Safari menu.
3. Choose Reset Safari….
4. Click Reset button.

Learn more about resetting browser settings in Safari.

Reset browser setting in Google Chrome:

1. Click the Chrome menu (3 bar button) in the top right corner.
2. Choose Settings.
3. Click Show advanced settings.
4. Go to Reset browser settings section.
5. Click Reset browser settings.
6. In the dialog that appears, click Reset.

Learn more about resetting browser settings in Google Chrome.

Reset browser setting in Mozilla Firefox:

1. Open Mozilla Firefox.
2. Go to Help.
3. Go to Troubleshooting information.
4. Click Reset Firefox… button.

Learn more about resetting browser settings in Mozilla Firefox.