6 ms·

Its like me blocking youtube on hosts file or even on Pihole or related manually. I realize blocking youtube BREAKS a lot of things in the network.

Retr0id 1y ago
What does blocking youtube break, aside from youtube?
- gavinsyancey 1y ago
  There's a YouTube domain that's somehow a load-bearing part of Google's OAuth login flow.
  - cj 1y ago
    I’ve never understood this (and really would like to). Why on earth does Google redirect to YouTube and then back to Google when logging in… The only reason I can think of is to sync user session cookies across domains?
    - jcelerier 1y ago
      I guess it's the same reason I go through 4 login screens whenever I want to login to my Microsoft account... Legacy
    - UltraSane 1y ago
      Perhaps they want to force companies to not block YouTube.
    - kaoD 1y ago
      It's indeed to log you in to multiple Google properties at once. It's not needed for e.g. Gmail (since it's a subdomain under google.com) but YouTube is in its own domain so it has no access to google.com's cookies.
    - odo1242 1y ago
      I can confirm: it’s because of the syncing session cookies across domains. I do believe it works if you block just the youtube.com domain and not *.youtube.com
    - j16sdiz 1y ago
      You already know the reason. In additional to youtube.com, in many cases, they redirect to many countries specific domain as well (e.g google.co.jp) Youtube is common enough that they want to login on the same flow
    - kccqzy 1y ago
      I turned off YouTube for my account using admin.google.com. Doing so causes Google to stop redirecting me to YouTube and back. Of course this also means I'm never logged in while visiting YouTube.
    - timewizard 1y ago
      Other than Chrome browsers don't support third party cookies by default.
  - prirai 1y ago
    Yes, I noticed this. Perhaps due to different handling of logins on both the sites. This could be handled in the backend by not redirecting as well, but therd should have been design choices there.

Retr0id 1y ago

What does blocking youtube break, aside from youtube?

gavinsyancey 1y ago
There's a YouTube domain that's somehow a load-bearing part of Google's OAuth login flow.
- cj 1y ago
  I’ve never understood this (and really would like to). Why on earth does Google redirect to YouTube and then back to Google when logging in… The only reason I can think of is to sync user session cookies across domains?
  - jcelerier 1y ago
    I guess it's the same reason I go through 4 login screens whenever I want to login to my Microsoft account... Legacy
  - UltraSane 1y ago
    Perhaps they want to force companies to not block YouTube.
  - kaoD 1y ago
    It's indeed to log you in to multiple Google properties at once. It's not needed for e.g. Gmail (since it's a subdomain under google.com) but YouTube is in its own domain so it has no access to google.com's cookies.
  - odo1242 1y ago
    I can confirm: it’s because of the syncing session cookies across domains. I do believe it works if you block just the youtube.com domain and not *.youtube.com
  - j16sdiz 1y ago
    You already know the reason. In additional to youtube.com, in many cases, they redirect to many countries specific domain as well (e.g google.co.jp) Youtube is common enough that they want to login on the same flow
  - kccqzy 1y ago
    I turned off YouTube for my account using admin.google.com. Doing so causes Google to stop redirecting me to YouTube and back. Of course this also means I'm never logged in while visiting YouTube.
  - timewizard 1y ago
    Other than Chrome browsers don't support third party cookies by default.
- prirai 1y ago
  Yes, I noticed this. Perhaps due to different handling of logins on both the sites. This could be handled in the backend by not redirecting as well, but therd should have been design choices there.