Dear users, 

Microsoft announced an upcoming change to the Microsoft Teams Desktop Client for Windows that improves performance and the calling experience. 

What is changing

Microsoft is introducing a new process named ms-teams_modulehost.exe in the Teams Desktop Client for Windows. This process will run alongside the main Teams application (ms-teams.exe) and separately handle calling features. The goal of this change is to improve application startup time, resource usage, and overall calling performance.
No action is required by end users.  

Timeline

• • Rollout begins early January 2026.
  • Expected completion by late January 2026.

If you have any further questions or concerns, please submit a ticket to the Enterprise Service Centre at (https://uoft.me/m365help). 

Kind regards, 

Enterprise Applications & Solutions Integration (EASI)
Information Technology Services, University of Toronto