Question : How to obtain the Product key

we purchase a Microsoft Open License, here in the document it has the Licensee Authorization Number and License Number, now how can I have the product key of this? is there is a step by step procedure would help me a lot.

Thanks...

Answer : How to obtain the Product key

Generally you log on to your Microsoft subscription page - something like: http://technet.microsoft.com/en-au/subscriptions/downloads/default.aspx

Hope this is what you are looking for.