Any problem if Windows 8.1 pro is not activated?

[Ali Akbar 7]

Is there any problem if Windows 8.1 pro is not activated?
Is there any way to activate it by getting a product key, not by purchasing?

 

[N_LaRUE]

You're talking about pirating software. Sorry you'll have to find information elsewhere not here.

If you don't want to purchase W8.1 Pro and you can't find a key then it will stop working eventually.

 

[nTrud3r]

You're talking about pirating software. Sorry you'll have to find information elsewhere not here.

If you don't want to purchase W8.1 Pro and you can't find a key then it will stop working eventually.

This, and AFAIK you're missing out on all non-security updates from Microsoft. If you're looking for a free OS then the only one I can recommend is Linux.