Use Bitdefender 2017 Key with Bitdefender 2015

Hello Guys,

i have a Question now i have Bitdefender MultiDevice 2017 Key that i have activated in Central.

But i would like to install Bitdefender 2015 but the Key from 2017 don't work ?

How i Can use the key for Bitdefender 2015 the reason that i would like to use 2015 is that BD 2015 is smarter than 2017.

I have 10 Devices in my Package my Friend use 2017 and i would like to use 2015.

I Hope everyone can help me.

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Hello,

Please follow the steps in the article below.

Hello Sir,

i thank you very much you have saved my Life

The Hotline Support dont cant them

PS: Sir how often i can use the Licenze for bd 2015 ?