# License concern

**URL:** <https://community.wowza.com/t/license-concern/55211>\
**Category:** Wowza Streaming Engine\
**Created:** [May 21, 2020, 2:39pm UTC](https://community.wowza.com/t/license-concern/55211 "2020-05-21T14:39:46Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Manesh\_Kumar](https://avatars.discourse-cdn.com/v4/letter/m/6bbea6/32.png) [@Manesh\_Kumar](https://community.wowza.com/u/Manesh_Kumar)\
**Post date:** [May 21, 2020, 2:39pm UTC](https://community.wowza.com/t/license-concern/55211/1 "2020-05-21T14:39:46Z")

</div>

Can we move the existing license from one server to another on account of decommissioning the existing one. 1st server is windows another one is Linux box… is it possible…

---

<div class="post-metadata">

**Author:** ![Karel\_Boek](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/karel_boek/32/454_2.png) [@Karel\_Boek](https://community.wowza.com/u/Karel_Boek)\
**Post date:** [May 21, 2020, 4:37pm UTC](https://community.wowza.com/t/license-concern/55211/2 "2020-05-21T16:37:30Z")

</div>

Yes, the Wowza Licensing service counts the number of concurrent instances; so if you stop the existing instance, you can thereafter use that license on another instance.

If you have a subscription license, you’ll be billed for the max. number of concurrent licenses that have been running at any given time in a month. So if you use the same license on two servers, it’ll work, but you’ll be billed for that.

If you have a perpetual license, you can only use the license on the exact number of instances that you have bought the license for (it’s possible to buy a perpetual license for multiple instances)

---

<div class="post-metadata">

**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [May 21, 2020, 4:34pm UTC](https://community.wowza.com/t/license-concern/55211/3 "2020-05-21T16:34:38Z")

</div>

Yes @Manesh Kumar you can do this. What we suggest you do is use a Research & Development License (R&D) key on the new instance until it is setup… then when ready add the old key to the new instance and decommission the other server. \*\*Operating System doesn’t matter.

You can reach out to [sales@wowza.com](mailto:sales@wowza.com) for more information on a Research & Development License.

Here is a Wowza doc for you to reference:

[https://www.wowza.com/docs/how-to-migrate-wowza-streaming-engine-to-a-different-server](https://www.wowza.com/docs/how-to-migrate-wowza-streaming-engine-to-a-different-server)