Teams App Not working on Android Devices

So recently our organization decided to use Microsoft Teams for our communication. And It is working fine on Web and iPhone But no one is able to login on Android Device. Whenever we try to login on Android Device using Team App, we get this error.

There was a problem with the network. Try signing in again

I have logged in using same credentials on iOS and Web and It worked but same credentials are not working on Android.

Please guide me, how to fix this issue as it is very urgent for us.

Our IT people said it's a certificate issue with Android devices.

Not signing into my account

Hi,

I was able to use the app all the time including this morning but mid-day it stopped and since then I keep getting this weird error message. I am able to enter my email address but after clicking on log-in the error pops up without allowing me to enter my password. 

I have reviewed the past comments here and I have gone through all the necessary suggested steps and still the same problem. Not sure what's causing this as on my laptop and the desktop version all is good but on my mobile phone it's not. 

I also tried logging into Microsoft 365 on my phone and I can but when I click on Teams it says it's not supported by my browser version and need to use the app which is back to square one. 

My phone is up to date and all apps are also updated too.

I do use an Authenticator for getting access to my work network and that works fine as well for both desktop and also mobile access so it can't be from that. 

Any help is appreciated. 

Thanks 

Farid 

I have removed the Authenticator app, uninstalled Teams, restarted, re-installed Teams and I still get the error message.  All other apps are on the Internet except Teams.  Surely there is a resolution.

There was a problem with the network. Try signing in again

Download it via play store:

https://play.google.com/store/apps/details?id=com.microsoft.teams&hl=en