I have provided a link here for you to quickly check to see what the EOL “End Of Life” is for your version of MS Office.
Check your version by clicking here and enter the product i.e. word 2013
Why is this important? Microsoft provides security updates to all its products on Patch Tuesday. Once the EOL is reached, your application may be vulnerable to attack from various viruses, malware, stealthware, or direct attack from a hacker.