If you are still using a very old operating system and want to browse with Chrome, I am afraid I have some bad news for you. Google has revealed that it would no longer offer Chrome support for Windows XP, Vista and OS X 10.6-10.8 by April 2016. Users of those operating systems can continue using Chrome forever but the browser will not receive any updates, security or otherwise, once the deadline has been reached.
The company simply cites the fact that these platforms are no longer supported by Microsoft and Apple. Marc Pawliger, Google’s director of engineering, specifically said that “such older platforms are missing critical security updates and have a greater potential to be infected by viruses and malware”. That quote alone should explain Google’s decision since it simply cannot patch the browser up properly. Google initially wanted to stop supporting XP on April 2014 but, like Microsoft, it has continued to work on the OS with important security updates.
Of all the listed operating systems, Vista is the only one that is still supported by its parent company as Microsoft will keep offering Vista updates till April 2017. With that said, it has a paltry 2% of the global OS market share when compared to the slightly-under-10% of Windows XP. On the OS X side, Apple only supports the latest three versions of its operating system which means that even 10.8 is old by its standards now that 10.11 El Capitan has been released. It will be interesting to see if discontinued Chrome support will affect the market share of these systems, especially on Windows XP where people are quickly running out of options.