Starting January 2026, Microsoft Teams is going to introduce a new process – ms-teams_modulehost.exe – in addition of the existing ms-teams.exe.
This new process – ms-teams_modulehost.exe – is going take charge of the calling capabilities.
If you are using any security products (such as Defender App Control, group policy or Threatlocker….) to manage authorized processes to be executed on your client devices, you will need to update the configuration to include this new Teams process.