Teams and Skype won`t connect unless on corporate network

[James2019]

Hi,

I have an issue where Teams and Skype will not connect unless the user is in the office or connected via VPN to the office. When i try and go to the Teams web download page it won`t resolve unless on the VPN. 

Any ideas where to look to resolve this? 

Thanks

James

[#2]

Please check if you have conditinal access with ip restrictions

[#3]

@oshridahan_cloudedge  thanks for the reply. 

No IP restrictions set up. There is still internet when the VPN is turned off it just can`t resolve teams. 

[#4]

It has to be conditional access as stated or you have some kind of hard coded DNS servers setup on your computer for Teams or a proxy / Host based security software possibly preventing / routing Teams wrong.

If you try and ping teams.microsoft.com do you get an ip / reply or does it time out? I would see where it's routing you too and go there, but it's going to be one of those things based on what's happening. Can you access from a personal computer outside the network? If you can then it's going to be some kind of DNS / Proxy / Security software preventing it installed / setup on that computer you are using if there isn't any conditional access policies setup on 365 side (which another, non work pc will determine this)

[#5]

No hardcoded DNS, checked this morning. No conditional access setup and can`t ping teams.microsoft.com unless on the VPN. 

Haven`t tried another laptop but will see if i can get one to test. It`s certainly odd.