There are several reasons ads might not be blocked in YouTube videos. Here are the solutions we know about at this time. Please try them in order.


Please note, however, that we're big fans of supporting YouTubers you love by allowing them to show you ads. You can easily whitelist specific YouTube channels in Chrome, Edge, Firefox, and Opera. (Safari doesn't allow us to offer this feature yet.)


Mobile devices

Desktops and laptops

AdBlock for Safari app

Less-common issues with specific browsers


Mobile devices

On mobile, watch videos in a browser, not a YouTube app

AdBlock is a browser extension. We can only block ads that appear on web pages you visit in your browser. If you use a mobile browser that supports AdBlock (Safari on iOS devices; Samsung Internet and Firefox on Android devices), then try watching videos on Youtube.com.


If you use a different browser or you prefer the YouTube app, there are alternate ways to block ads on a mobile device.


Desktops and laptops

The following suggestions can be used with any browser on Windows, MacOS, and Linux computers.


Restart your computer

When something on your computer isn't working right, try restarting your computer. (Restarting solves 95% of all known computer problems.)


Refresh your filter lists

Make sure you have the most up-to-date copy of the filter lists you're subscribed to. They're updated automatically on a schedule set by the list maintainers, but you can force an update at any time. Here's how to manually update your filter lists on desktop and mobile AdBlock.


Make sure YouTube isn't whitelisted

Check to make sure you didn't tell AdBlock not to run on YouTube or whitelist the channel you're watching.


Clear your browser cache and reset your browser

Try clearing your browser cache and cookies and resetting your browser.


Reinstall AdBlock

Uninstalling and reinstalling AdBlock and restarting your browser often makes ads go away on any site where they're not being blocked properly. (If you have any custom filters, be sure to copy them to a text file first! You'll need to add them again after you reinstall AdBlock.)


Don't log in to YouTube

Some users have told us that they only see ads when they are logged in to their YouTube account. Try logging out, or watching videos in an incognito or private window.


Look for another extension that is interfering with AdBlock

Disable all your extensions except for AdBlock. Try to watch your video again. If you don't see any ads, then one of the extensions you disabled is somehow interfering with AdBlock. Re-enable each one at a time until you find the one that makes ads appear.


If you need to use one of these extensions, notify the extension's developers so they can fix the issue that's causing the interference.


Troubleshoot your browser

If the previous suggestions haven't eliminated the ads, then your browser may be at fault. Try these troubleshooting steps:

Basic Chrome troubleshooting

Basic Safari troubleshooting

Basic Firefox troubleshooting

Basic Microsoft Edge troubleshooting


AdBlock for Safari app

First, a little background: Ad-blocking apps that are made to work with Safari 12 use a different method than ad-blocking extensions in Safari 11 and earlier did. The newer method, called content blocking, requires using a different kind of filter list than the old method used. There is a known issue with the new content blocking filter list. It doesn't block YouTube (or Facebook) ads as well as the old way did.


Top minds are hard at work trying to fix the issue. We recommend you use our Safari extension or a different browser to watch YouTube videos (even if you keep Safari as your browser for everything else).


Please see these articles for more information:

What's different after the September AdBlock for Safari update?

What is Safari Content Blocking?

Getting started with the AdBlock for Safari app

Frequently asked questions about the AdBlock for Safari app


Less-common issues with specific browsers

The following suggestions apply to fairly rare issues in some browsers.


Firefox, Microsoft Edge, Safari (legacy extension): Check whether the video uses the Adobe Flash player

This is a usually an issue only when a YouTube video is embedded on a website that uses the Adobe Flash player. On YouTube.com, the newer HTML5 player is now the default in most modern browsers. We can block ads just fine in the HTML5 player.


AdBlock can't block ads in Flash videos, except in our legacy Safari extension with content blocking enabled. How can you tell whether a video uses the Flash player? Right-click the video window and look for the word "Flash" in the pop-up menu. If you come across an embedded Flash video, try one of these workarounds.


Tip: On a related note, Google is moving toward removing support for Flash in Chrome entirely, replacing it with HTML5 as the preferred and default way to display website content. This means that unless a website has an HTML5 content player, video content will not automatically display. All Flash content will be blocked, unless users manually enable Flash. (You may see a little logo in the Chrome address bar on sites that have Flash content.) In Chrome 57+, you can manage your Flash content and site-by-site exceptions in Chrome's content settings (Settings > Show advanced settings > Content settings, under "Flash").


Chrome: Uninstall the YouTube Chrome app

If you start to see ads in YouTube videos after a Chrome update, try removing the YouTube Chrome app. A bug in some versions of Chrome can cause ads not to be blocked properly if you have the YouTube Chrome app installed (even if you don't use it to watch videos). This was particularly prevalent late in 2015, but it still crops up occasionally. The bug affects not just YouTube but Pandora and Spotify as well if you have those Chrome apps installed.


Safari: Don't watch videos full-screen

There is a known issue in our legacy AdBlock for Safari extension that causes ads not to be blocked on YouTube when the video player is in full-screen mode. Here are some workarounds:

  • Watch videos in the smaller player.
  • Exit full-screen mode before starting another video.
  • Watch full-screen videos in Chrome or Firefox, even if you keep Safari as your browser for everything else.
  • If you're using our self-hosted extension, enable Safari Content Blocking in AdBlock's options.


Google may be trying something new

Google, like all content providers that rely on ad revenue, constantly tries to come up with ways to circumvent ad blocking. The filter list maintainers usually come up with a new filter to get around it, which goes out with the next list update. That's why updating your filter lists is generally all it takes to remove ads.


I've tried everything you suggested and I'm still seeing ads!

If none of these seems to cover your particular issue, feel free to open a ticket on our help site and we'll be happy to take a look.



Bonus tip #1: Annotations aren't ads

Technically, YouTube annotations aren't ads. They are kind of like advertising, though, and like ads they can be intrusive and annoying. To stop seeing them, this article from HowToGeek has instructions on how to disable annotations on YouTube videos


Bonus tip #2: Try an old experimental feature

If all else fails, you can try this suggestion from GHacks.net by way of LifeHacker. The article is from 2013, so the experiment it discusses may no longer be running. But hey, nothing ventured, nothing gained! (If you try it and it works, please let us know in our Tips & Tricks forum.)


Bonus tip #3: Try refreshing the page

We got this tip from Twitter. If you encounter one of those long unskippable ads and the above suggestions don't help, press F5 to reload the page. We have no idea whether this works. We never see the ads ourselves so we can't test. It certainly won't hurt to try!