FortiClient telemetry connection to EMS breaks MSTeams

[miciti]

Hi everyone,

I am facing a strange issue here:

One of our laptops has bad network quality on MSTeams as soon as FortiClient is connected to EMS.

The issue seems to appear only on WLAN, when Ethernet is connected via dockingstation (usb-c) everything works fine.

But as soon as the user moves to another location and uses WiFi MSTeams has lot of dropouts when on a call. I tried disabling all security profiles but the issue still appears.
Only thing that help is disconnecting the client from EMS in the zero trust telemetry section from FortiClient.
I also tried the versions 7.0.x and 7.2.x.

Any ideas?

The affected device is a Dell Precision 7680 with an Intel(R) Wi-Fi 6E AX211 card... I have found some older issues (2 years old) with FortiClient and Intel wifi cards but nothing related to MSTeams...

[mahesh_pm]

Hi,

Have you checked if there are any VPN split traffic, ZTNA, or Inline CASB rules enabled for Microsoft Teams or other Microsoft traffic? Additionally, have you verified the on-net and off-net profiles in EMS?

Regards
Mahesh

[miciti]

I did disable all policies and rules, no further connections like VPN were used.

Have found nothing that could potentially block MSTeams.