Microsoft is pulling the plug on its support for Windows XP on this Tuesday.
This will leave anyone still running the 13-year-old operating system without potentially critical security updates.
The U.S.-based software giant will stop providing security updates and patches, free or paid assisted support options, as well as online technical content updates for the XP operating system.
Estimates suggest that almost 1 in 5 personal computers still run XP and while consumers are entitled to carry on using it for as long as they like -- those who choose to do so will be much more vulnerable to cyber attacks.
Most ATMs also use XP raising concerns they could be prone to security risks.
Microsoft is advising Windows XP users to consider upgrading to Windows 7 or 8.