If you have paused or disabled your ad blocker or whitelisted the website―or if you don't have an ad blocker at all; see the bottom of this article―then either the test the site is using to detect ad blockers is generating a false positive or there is something on your computer that's causing the test to fail. This affects all ad blockers, not just AdBlock.

There is nothing we can do to fix this. The issue is either on the site or on your system, not in AdBlock. However, here are some troubleshooting steps to try.

After you whitelist the site, try clearing the site's cookies.

If ads are hidden or unable to be displayed, this will cause the test to fail. This is usually due to a few things: 

  • An extension that turns off JavaScript (NoScript, etc.), which is often used by advertisers to display ads
  • An extension that blocks tracking or cookies
  • JavaScript being turned off in your browser (Here's how to enable JavaScript in most popular browsers.)
  • Kaspersky Anti-Banner, which specifically blocks banner ads (thanks, dcfavero, for this suggestion!)

Other things that can trigger adblock detection:

  • The Opera browser, which natively blocks ads
  • The Chrome browser (both desktop and mobile) natively blocks ads as of February 2018. See this article from How-To Geek on how to disable Chrome's built-in ad blocking everywhere or whitelist an individual site.
  • Firefox Tracking Protection, which can block advertisements and the way advertisers use cookies (add an exception for the site under Tracking Protection in Firefox's Privacy & Security settings)
  • The Ghostery, PrivacyBadger, and Disconnect extensions, which block trackers
  • Smaller browsers such as SeaMonkey and Torch
  • Some ISPs (Internet Service Providers) may be blocking ads on your behalf
  • Occasionally very slow Internet connections will not allow the ad requests to complete and can cause the message to display

If those suggestions don't fix the problem, we recommend notifying the site administrators, if a contact is listed.

Alternatively, if you weren't using an ad blocker before, you might want to consider installing AdBlock and trying our suggestions to circumvent anti-adblocking. It's a rather ironic workaround, but it might just work. :)

I've tried everything and nothing helps!

If you've gone through all the troubleshooting tips above, including uninstalling AdBlock and any other ad blockers or privacy extensions you have, and you're still getting that warning, the next thing to try is some basic browser troubleshooting. We have instructions for Chrome, Safari, Microsoft Edge, and Firefox. That will help to rule out any problems with your browser.

By the way, more advanced Windows users often ask us whether some little piece of AdBlock might have been left behind in the Windows registry after uninstalling it. Editing the Windows registry won't help. AdBlock isn't a Windows application. It's a browser extension, basically a little piece of software that helps a browser to do a little more than it could before. In other words, it's part of the browser. If you reinstalled the browser, or even if you just created a new user profile in Chrome or Firefox―without reinstalling AdBlock or any other ad blocker or privacy extension―and you're still getting those warnings, then AdBlock and those other extensions are 100% not the reason.

At this point, this is what you should have tried, testing the website again after each step:
  • Disabled or uninstalled AdBlock and any other ad blockers and privacy extensions
  • Disabled all of your remaining extensions
  • Created a new Chrome or Firefox profile
  • Ruled out all the possible causes listed at the beginning of this article
  • Tried some basic browser troubleshooting, including uninstalling and reinstalling your browser

If you have done all that and nothing has made a difference, then the last remaining culprit is the website itself. As we stated above, whatever test the site is using is generating a false positive. Our best suggestion is to contact the site's administrators and report the issue.

If you'd rather not do that, you could try visiting the site in a different browser altogether and see if that helps. Once again, however, if you still get that warning, then it's definitely the site's fault and you're back to reporting the issue to the site administrators.

If you're seeing this error on Wired.com

If Wired.com still asks you to disable AdBlock although the site is whitelisted, this used to be caused by a bug in AdBlock. It was fixed in our AdBlock for Chrome 3.9.1 release. If you're still getting this anti-adblocking notice, try the suggestions above.

How to find out whether you have an ad blocker

Look in the list of installed extensions:

  • In Chrome or Opera, enter about:extensions in the address bar.
  • In Safari, go to Safari > Preferences > Extensions.
  • In Edge, click More (...) > Extensions.
  • In Firefox, enter about:addons in the address bar.

Do you see AdBlock (or any extension with a similar name), Disconnect, Ghostery, PrivacyBadger, or a JavaScript blocker in the list? Try disabling it and see if it makes a difference. If it does, you may want to keep it disabled while you're visiting the site, then turn it back on when you leave.