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MFA - Modern Authentication Skype for Business with VVX Phones

Tim Wijnands
Occasional Visitor

MFA - Modern Authentication Skype for Business with VVX Phones

We have a customer who want to enable MFA authentication within their Skype for Business environment. User only user MFA when being outside of the office network.


Internally they are using some VVX501 phones, but when Modern Authentication is enabled, users are not able to sign in, as the phones cannot get a token from the ADFS server.


So the question is: Is Modern Authentication supported with Firmware And if it is, is there some guidance how to set it up?


Message 1 of 3
Polycom Employee & Community Manager

Re: MFA - Modern Authentication Skype for Business with VVX Phones

Hello Tim Wijnands,

welcome to the Polycom Community.

As far as I know Modern Auth is not to be recommended to be enabled for a On Premise Server. This is an information we received from Microsoft for another case.

Is you issue for Pin and Extension or for Single Sign in?

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

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. All posts and words are my own & do not represent the views of Employer.


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 3
Tim Wijnands
Occasional Visitor

Re: MFA - Modern Authentication Skype for Business with VVX Phones

For both option it is not working we are getting the following error on the ADFS sever:


Exception details:

Microsoft.IdentityServer.RequestFailedException: MSIS7065: There are no registered protocol handlers on path /adfs/oauth2/authorize/common/UserRealm/ to process the incoming request.

   at Microsoft.IdentityServer.Web.PassiveProtocolListener.OnGetContext(WrappedHttpListenerContext context)


Also i found the following article: 


So should Modern Authentication work?

Message 3 of 3