Taking a glance at the official documentation (and solution) from Microsoft over at: Now on the other hand, if you have deployed the Teams machine-wide installer, you are able to just create a single Firewall rule with Intune’s built-in Firewall CSP.īut that’s no fun, so let’s take a look at how you can crack this “per-user” nut with PowerShell and Microsoft Intune! The script to fix the Microsoft Teams firewall madness Things get complicated because the Teams.exe file is usually installed per-user in the users own APPDATA folder ( %localappdata%\Microsoft\Teams\current\Teams.exe), so we need to create a Firewall rule for each user on the Windows 10 Device – not doable with the built-in Firewall CSP. So it was able to create firewall rules anyway?! (This is the madness of the Microsoft Teams firewall prompt). Dismissing the prompt will actually leave you with two blocking Firewall rules for Teams.exe, which will force the Teams client to connect via other means. Which most users don’t have, so they will dismiss the prompt. Teams will automatically try and create the required rules, but they require admin permissions. You see – as far as I can tell, the Microsoft Teams executable, requires an inbound Firewall rule, when it detects that you are on the same domain network as another party in the chat. I’m glad you asked – because Microsoft Intune can most certainly help you out!īut it requires a little PowerShell magic, as the built-in Firewall CSP is unable to handle user based path variables. “ Users keep bugging us about this annoying ‘Windows Security Alert’ that the Windows Firewall throws every time they try to share their screen in Microsoft Teams“.Īnd you might ask: “ Can I use Microsoft Intune to silence this madness?“. It’s rise in popularity also means that old issues arise a new for a lot of tenants that have not fully utilized the Teams client in the past or have just begun the transition to Office 365 ProPlus that includes Teams.Īnd you might end up hearing something along these lines from your friendly Help Desk staff: With over 44 million active users, Microsoft Teams Firewall is not going away anytime soon.
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