Why is it so important to regularly update your operating system ?

On inspecting his Operating System (OS), I found that it was not updated. I copied some of the problem files on my pendrive and tried opening it on my laptop which has a fully updated OS. And I mean it. My OS is updated till the last update released by Microsoft. All files opened without any issues. Now if it was a CorelDRAW issue, then the files should have not opened on my machine as well.

It is not just sufficient to have a genuine OS but you need to update it regularly. Ensuring to install updates on your OS and the application makes it sure that you have it at its full capacity.