Can't log in to teams app on desktop

[margaret0817]

We have tried everything, including install, uninstall, support for 2 hours, etc.  Here is a screen shot of what happens.

I can only access the old teams from website.  Ugh!  Help!

[#2]

You have probably tried this but worth clearing the cache https://answers.microsoft.com/en-us/msteams/forum/all/clear-cache/0810ce4f-af14-4269-b01f-adc89a0af4...

Do you have a licences assigned?

AC

[#3]

Does the Team's Web Client work?

[#4]

Thanks, but yes tried that to no avail.

[#5]

-Has there been any changes to your organization Firewall.
-Can you take the device to a remote location with open internet and test Teams?

-Larry

[#6]

Thank you for your suggestions. I am on a personal device, so no firewall. I tried to access using a different computer and that worked but I am unable to access it on mine. I will be leading a training session on Thursday for which I need to use the breakout function available only on the desktop app.

[#7]

Might be a Windows Defender issue.

See if this link offer you some solution.
https://docs.microsoft.com/en-us/answers/questions/91609/microsoft-teams-windows-defender-firewall-b...

-Larry