10240 (non LTSB) is out of support now, that's true

[BetaNewbie]

Sounds werid, but true.

Unlike LTSB, mainstream Windows 10 (known as Current Branch and Current Branch for Business) releases have their EOL after two new versions are released to CBB.

LTSB 2015 however, have a full 10-year lifecycle, which ends in 2025.

So if you are running 10240 on your PC (which is odd actually, you should be forced to upgraded to 10586 or higher, isn't it? ), you should upgrade now....