I've created custom app in teams app studio for client. Its working fine when we opened teams in browser. But its not loading in teams desktop app in client network. But through VPN its loading in desktop app also. The tab in app contains the URL for UI for our bot. Can anyone knows how to fix this?
So when you say it is working well through VPN and also on the browser, i think something is block it either any policy on the network level or anything installed on local machines as soon as it connect to VPN that local machines respect the policy of the network and allow the teams to load the app, could be the website or data source used in the app is directing to a site which is being blocked on the machines which are managed by any kind of Anti-virus or management tools