Invalid product key?

Hello,

I have recently had to upgrade my own computer and transfer a new 2016 license to mine. I successfully de-activated their license using the license transfer utility but when I type in the serial code and Product key into mine I get an invalid product key error? I am using the correct key but it won't register.

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References forums.autodesk.com/t5/installation-licensing/invalid-product-key/td-p/5844937

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