VVX 411 - Login to Teams - Stuck at "Authentication in Progress"

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VVX 411 - Login to Teams - Stuck at "Authentication in Progress"



For some reason my phone is stuck at Authentication in Progress while doing Web Sign-in. I have tried multiple steps including resetting the date/time and to factory settings.  NTP test keeps failing so I'm not sure what I'm missing. I have attached the logs.


NTP Test

time.windows.com (DHCP)Failed


Time Synchronization

Override DHCP's SNTP ServerNo
SNTP Server

Alternate SNTP Server (Blank)

SNTP Resync Period (s)
Override DHCP's Time ZoneNo
Time ZoneEastern
Alternate Time ZoneWestern


UC Software Version6.4.3.5156
Updater Version6.4.3.3738



Polycom Employee & Community Manager

Re: VVX 411 - Login to Teams - Stuck at "Authentication in Progress"

Hello @Eric1 ,


Welcome to the Poly Community. This post was stuck in the spam filter and had to be manually released by one of us volunteers.


I am pretty sure Microsoft does not support UC Software 6.4.x so downgrade to 6.3.0 or 6.3.1 and try again.


I can see the logs are full of:

0714112530|nisvc|2|00|HTTP SEND:: DestUrl(https://login.microsoftonline.com/common/oauth2/token?api-version=1.0), HttpResCode(400), curlRetCode(0) retVal(0)

From our Microsoft FAQ:


Jan 17, 2017 Question: How can I troubleshoot simple Skype for Business, Office365 or Teams issues?

Resolution: Have a look => here <=


The next step would be a ticket with our Partner Microsoft as they host the Platform you are trying to use.

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

Best Regards

Steffen Baier



If official support is required please check how to phone or open a case here

The title Poly 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.


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