Showing results for 
Search instead for 
Did you mean: 

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?

Message 1 of 2
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

Please be aware:

The purpose of these forums is to allow community members collaborate and help each other.
Questions posted here do not follow Polycom’s SLA guidelines.
If you require assistance from Polycom technical support, please open a
web service request or call us .

The above is necessary in order to track issue internally within Polycom.

You are welcome to post more questions or configuration or logs for other community members to look at but if your issue requires a fix via Polycom you must go via the official support structure.

Please ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

This forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Polycom employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and may be answered on weekends, bank holidays or personal holidays.
Message 2 of 2