Google shuts down Chrome Sync for third-party browsers on Android

If you are using a third-party web browser on your Android device and Google Sync, you may have noticed that syncing stopped working all of a sudden.
Quite a few browsers are based on Chromium, the open source part of Chrome. This is efficient for developers, as they don't have to concentrate on core features such as getting page rendering right or ensuring support for new web technologies, but can concentrate on other areas to distinguish the browser from Chrome, Chromium, and third-party browsers based on Chromium.
Android Police reports that Google has shut down access to Chrome Sync for third-party web browsers on Android. The change affects even Chromium itself, which Google sees as a third-party browser when it comes to Chrome's sync functionality.
Developers filed a bug on January 3, and a Google developer gave the following response on January 24:
We locked down access to chromesync scoped refresh tokens to address a security vulnerability. When we did so, we knew that this may break some 3P browsers which made use of chromesync scoped refresh tokens to leverage Chrome Sync for their users.
Chrome Sync has never officially been supported for 3P browsers. We do not intend to create a solution by which 3P browsers can whitelist themsleves or their users so that they can get chromesync scoped refresh tokens. Note that Chromium for Android is technically considered a 3P browser.
Marking as WontFix, accordingly.
The Google developer mentioned that access was locked down due to a security vulnerability, and that access to the Sync API was never supported officially.
Chrome Sync may still work on some devices, as refresh tokens may still be available. This will change eventually, and new users and those that set up a browser anew will notice that sync is no longer working
You can verify the state of Chrome Sync on your Android device by loading chrome://sync-internals in the mobile browser's address bar.
Check the credentials listing to see if a token has been received, and the server connection under local state. While you may still see a token -- if it was received before Google made the change -- new users will see n/a under received token and an auth error under server connection.
There is nothing that you can do about it. Google stated already that it won't enable sync access for third-party Android clients again, and that there won't be a whitelist as well. Clients may add their own sync functionality, or if available, third-party sync to their browsers.


Thanks for the tip Martin.
It is for these kinds of posts that I follow GHacks.
What’s up with the generic comment, are you a bot?
2G?
Where on the planet is that still in use? I was forced to give up using my RAZRV3 years ago because 2G was phased out by AT&T.
Everywhere 3G has been turned off and you don’t have LTE coverage, and believe me there are many developed countries where this is the case and if it weren’t for 2G you wouldn’t even be able to make a phone call.
Maybe I missed it, but I don’t believe tha term “2G” is in the article. Perhaps you are referring to “AGM G2”??
@Martin
Your website has gone insane.
When I the post button I then saw my comment posted on a different article page. When I opened this article again, it is here.
@Tachy @Martin Brinkmann
” Your website has gone insane. ”
Same here. Has happened several times.
@Tachy,
@Martin P.,
For over two weeks now,
I’ve been seeing “Comments” posted by subscribers appearing in different, unrelated articles.
https://www.ghacks.net/windows-11-update-stuck-fixed-for-good/#comment-4572991
https://www.ghacks.net/windows-11-update-stuck-fixed-for-good/#comment-4572951
For the time being,
it would be better to specify the “article name and URL” at the beginning of the post.
@tachy a lot of non-phone devices with a sim in them rely on 2G, at least here in europe.
Usually things reporting usage or errors/alarms on something remote that does not get day to day inspection in person. They are out there in vast numbers doing important work. Reliable, good range. The low datarate is no problem at all in those cases.
3G is gone or on its last legs everywhere, but this stuff still has too much use to cancel.
Anyhow, interesting that they would put that in. I can see the point if you suspect a hostile 2G environment (amateur eavesdroppers with laptop, ranging up to professional grade MITM fake towers while “strangely” not getting the stronger crypto voip 4G because it is being jammed, and back down to something as old ‘stingray’ devices fallen into the wrong hands).
But does this also mean that they have handled and rolled out a fix for that nasty 4G ‘pwn by broadcast’ problem you reported earlier this year? I had 4G disabled due to that, on the off chance that some of the local criminals would buy some cheap chinese gear, download a working exploit and probe every phone in range all over town in the hope of getting into phones of the police.
>”While most may never be attacked in stingrays, it is still recommended to disable 2G cellular connections, especially since it does not have any downsides.”
The downside would be losing connectivity. I spend a lot of time way out in the countryside where there’s often no service or almost none. My network allows 2G, and I need it sometimes. I have an option on the phone to disable 2G, I may do that when I’m in the city and I have good 5G connectivity, but not out in the country.
I would imagine that the stingray exploits, like most of the bad things in this world, are probably things you will run into in the crowded big cities.
I stopped using it in a mobile (Wi-Fi line) environment, so I’m almost ignorant of the actual situation,
But the recent reality in Japan makes me realize that “the infrastructure of the web is nothing more than a papier-mâché fiction”.
https://www.ghacks.net/2023/08/17/google-chrome-to-enable-https-first-by-default-for-all-users/#comment-4572402
It is already beyond the scope of what an individual can do.
What we should be aware of is the reality that “governments and those in power want to control the world through the Web”, and efforts to counter (resist and prevent) such ambitions are necessary.
Why do you want people to disable the privacy features? Hmmmmm?
Now You: do you plan to keep the Ads privacy features enabled?
I’d like to tell you, but apparently if you make a post critical of Google, you get censored. * [Editor: removed, just try to bring your opinion across without attacking anyone]
@Martin
You website is still psychotic. Comments attach to random stories.
@Martin please do fix the comments, it’s completely insane commenting here! :[
@Martin
The comments are seriously messed up on gHacks now. These comments are mixed with the article at the below URL.
https://www.ghacks.net/2023/08/18/android-how-to-disable-2g-cellular-connections-to-improve-security/
And comments on other articles are from as far back as 2010.
What does this article has anything to do with all the comments on this article? LOL I think this Websuite is ran by ChatGPT. every article is messed up. Some older comments from 2015 shown up in recant articles, LOL
The picture captioned “Clearing the Android Auto’s cache might resolve the issue” is from Apple Carplay ;)
How about other things that matter:
Drop survival?
Screen toughness?
Degree of water and dust protection?