I’ve been using Google Hangouts as a text chat communications tool for a while now on both computer and tablet and despite some limitations, it really works great – IF it works, that is. That was unfortunately not the case when Google released an update of the Android Hangouts App – version 2.5.x – in mid-December, which seems to have completely broken the background push notifications and message synchronization of the app. Notifications only arrived when the app was actually in the foreground and messages appeared in the wrong order and often only when scrolling down manually. Notifications from all other apps including the Facebook Messenger worked perfectly, so it was not a general system problem and on my older tablet under Android 4.0.3 the problem did not even occur, so the Jellybean 4.1.1 of my current tablet didn’t seem at fault.

In short, the app became completely unusuable, and from the Play Store reviews it looked like I wasn’t the only one with this problem. There were various approaches to fixing the broken notifications, but from setting the notification sounds back and forth to switching notifications on and off in both the app and the system settings to several complete reinstalls, nothing worked. Then I read somewhere about the unlikely radical approach of removing and re-adding the Google account in the system settings, which surprisingly worked! It seems that something fundamental in the synchronization of the account was broken and only this drastic step fixed it.

The full steps that fixed the problem on my tablet were:
• Uninstall the Hangouts App. If it’s a system app on your device, uninstall all updates.
• Remove the Google account – if there are more than one, remove them all just in case.
• Re-Add all the Google accounts one by one. This might take some time because there will by a lot of synchronization in the background.
• Re-install the Google Hangouts app from the Play Store.
• Test the background notifications and make your preferred settings in the app.
• Rebooting with the Google accounts removed should be avoided, because some apps may not like it and could stop working, making reinstalls necessary. Other Google apps like Google+ did not notice the temporary removal of the Google accounts.

This should work in the more stubborn cases of broken Hangouts notifications – if this doesn’t fix it, only a  What I noticed is that the process com.android.smspush was not running when the problem occured, but appeared afterwards – obviously this service is the one handling all the notifications for the Hangouts app and for some reason it breaks on certain systems when the new 2.5.x version is installed.

One other peculiarity I noticed is that you are not getting any sort of notifications anymore on your mobile devices while you have a chat window open on a computer in the browser or in the Chrome hangouts extension. This especially happens when you use the older 2014.1119 version, which pops up the chat window as soon as a message arrives, while the newer 2014.1204 doesn’t open windows automatically and instead shows the messages as notifications on the app icon first, only marking notifications as read when a chat window is actually open.

I hope this article is going to be some help for those who encounter the same problems, as there don’t seem to many solutions out there.