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Thom Mckiernan Admin's avatar
Thom Mckiernan Admin
Copper Contributor
Mar 06, 2018
Solved

Skype Room System shows calendar info but can't sign in

We have 2 Logitech SRS systems that we are testing before a wider rollout (over 70 in total)   We have one kit working perfectly, but the other gives an error saying: "We can't sign you in beca...
  • Thom McKiernan's avatar
    May 24, 2018

    Resolved!

     

    We have now fixed this issue and it turns out it was firewall related. This is why it worked on our (Guest) Wi-Fi because that doesn't go through a firewall in the same way.

     

    An easy way to check is to run Microsoft's https://www.microsoft.com/en-us/download/details.aspx?id=53885 in "Connectivity Check" mode. It only takes a minute to run and enabled us to give our network team the exact info on what was getting blocked.

     

    It turned out, although we had added all of the URLs & IPs from the official Microsoft list, our next-gen layer 7 firewall was blocking particular ports (UDP 3478, 3479, 3480, 3481). We had to add these ports to our "STUN rule" to get them working.

     

    After that was done, the SRS logged in immediately

     

     

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