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Invalid License number and Serial number combination.

Occasional Advisor

Invalid License number and Serial number combination.

I purchased a Lync license from When I try to activate it for my VVX600, I get the message in the subject. After a lot of back and forth, I received the following response from the seller:



Installation of this license is not a requirement. Please keep the UC Lync License for verification if Polycom or Microsoft decides to audit you. Not installing the license will not affect the functionality of the software.


Do I need to worry about this?

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Polycom Employee & Community Manager

Re: Invalid License number and Serial number combination.

Hello cdonner,

welcome back to the Polycom Community.

The Information provided by the reseller is correct.

Best Regards

Steffen Baier

Polycom Global Services

The title Polycom Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 2