Chrome 50 was released yesterday as a stable version with some new features, but has ended support for several OSs, among them Windows XP, Windows Vista, OS X 10.6, OS X 10.7, and OS X 10.8.
Google promised to do that in November 2015, and they’re on time. Older versions on these OSs won’t stop working yet, but they won’t get updated, and Google hasn’t guaranteed that Google account sign in, syncing, etc. will still work.
So, if you have one of these older OSs and use Chrome, back up any data you have stored on a storage device of your own if you have no plans of upgrading your OS anytime soon, as you could lose access to it.
Another option remaining for you is to use a different browser. Firefox 45 still runs on XP and OSX 10.6, and the latest Opera should run on XP and above as well as OSX 10.7 and up, but that won’t protect the vulnerabilities of the older OSs.
Source:
http://arstechnica.com/gadgets/2016/04/chrome-50-ends-support-for-windows-xp-os-x-10-6-other-old-versions/