Google Analytics - Failed to load resource: http://www.google-analytics.com/ga.js

I've been noticing this error on Chrome's console for a while now:

I modified Google's script so that it logs the error, because it uses try{} catch{}, and this is what I got:

I haven't noticed considerable changes in the stats, it's always in ups and downs.

Also, this isn't only on my sites, but fricking everywhere. I haven't found bug reports or anything like that.

If I go to http://www.google-analytics.com/ga.js on the browser, it loads normally.

Does anyone have a clue of what causes this?

It was a problem with AdBlock. I disabled it and now it loads it normally.

yagudaev suggests (read answers below) that in order to keep AdBlock from blocking Google Analytics, you need to edit the snippet provided and explicitly use https:// instead of the protocol-relative URL by default. This means changing

'//www.google-analytics.com/analytics.js'

into

'https://www.google-analytics.com/analytics.js'

Example:

<script>
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-XXXXX-XX', 'auto');
  ga('send', 'pageview');
</script>

It could also be your hosts file, here's mine:

$ grep -ni "google-analytics.com" /etc/hosts
6203:# 127.0.0.1  ssl.google-analytics.com #[disabled = Firefox issues]
6204:127.0.0.1  www.google-analytics.com #[Google Analytics]

If it's an offline app (ie, you've defined a cache manifest) be sure to allow the network request.

See https://stackoverflow.com/questions/14410974/html5-appcache-causing-problems-with-google-analytics

The reason you are running into problems is because AdBlock will block this script if and only if it does not go through https. Notice the error you get it contains an http: protocol reference.

All you need to do is change the snippet to force it to go through an ssl connection by adding an explicit protocol instead of the protocol relative url that is the default.

<script>
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-XXXXX-XX', 'auto');
  ga('send', 'pageview');
</script>

This error is commonly caused due to one of the extensions installed within Chrome.
There are a few ways to debug and solve an ERR_BLOCKED_BY_CLIENT message.

> - Disable the extension. > - Whitelist the domain. > - Debug the issue.

I would recommend to find more detail at How to Solve ERR_BLOCKED_BY_CLIENT

2019 update

This has become very widespread now.

Solutions

1. Ask people to unblock your website, (bad idea from personal experience)
2. Host google analytics script locally (bad idea) because google says so HERE

> Referencing the JavaScript file from Google's servers (i.e., > https://www.googletagmanager.com/gtag/js) ensures that you get access > to new features and product updates as they become available, giving > you the most accurate data in your reports.

3. Use Server side analytics. This is what people are doing nowadays. If you are on node.js, use a library such as analytics or universal-analytics

I've noticed same thing on my browser some time ago. Did you sing in to chrome using your Google account maybe? Or did you choose in any way to opt-out from collecting data on Google Analytics ?

Maybe Google remembers that option and uses it on Chrome when you are singed in..

BTW. I can normally open http://www.google-analytics.com/ga.js in browser, it just doesn't work when automatically loaded.

Ensure Fiddler (or similar proxy) is not active.