Blocking ads on Youtube only works with firefox

[GrayTech]

Hello
I recently installed Pihole and it works great in most cases. But I have some issues with Youtube. It doesn't block ads on Youtube (browser and app) except when I'm using firefox. Can anybody help me out please?

[jfb]

There is a long running thread on the topic of YouTube ads:

How do I block ads on YouTube?

Update 2020-10-24 It's not likely that you'll be able to block in-video ads with Pi-hole. For that, you'll need something like uBlock origin for desktop, or vanced for android (Now defunct), This thread has been closed as there is not much more discussion to be had around the topic. Update 2018-11-14 User's have had good success here: I'm updating this top-level post as of 2018-10-16 since a lot of people land here. Blocking ads on YouTube is hit or miss with Pi-hole. The reason for th…

[GrayTech]

I've alreaedy seen some topics about youtube but I can't understand why I should change my pihole settings when it works fine in firefox but doesn't work in any other browser.

[jfb]

Pi-Hole operates independently of your browsers. If you have different behavior between browsers on a client connected to Pi-Hole, the place to look is in the browser settings.

For example, do you have any browser extensions installed on Firefox? Any ad-blockers, settings for ad blocking in the preferences, etc?

[GrayTech]

I have a clean installation of firefox. I just reinstalled it and it just works out of the box. Then I installed Waterfox which is based on firefox and it doesn't work. I'm using the default firefox settings and no adblock.
The ads next to the videos are replaced with connection errors and I don't get any video ads as it should be. On every other instance of youtube I get video ads as well as ads next to the videos.

[jfb]

This is a browser behavior. You can use these Pi-Hole tools to help you determine why this is happening with that particular browser.

How do I determine what domain an ad is coming from?

Block ads or fix broken sites This FAQ is written in the context of finding out how to block an ad that isn't blocked automatically, but the same steps can be used to troubleshoot issues with sites that don't function properly. An example is that sometimes certain payment gateways try to collect metrics on the sale, but these domains are blocked by Pi-hole, so the payment cannot be processed. Also, some links send you through several referrers and if one of them is blocked, you may land on a …

[GrayTech]

Okay, I'll diagnose it tomorrow. Thanks for your help. I'll keep you up to date!