Microsoft will speed up the launch and operation of Teams through a new separate process

The company has announced the introduction of a new ms-teams_modulehost.exe module that will handle call functions separately from the main process, which should noticeably speed up the launch of Teams and improve the responsiveness of the application.

Microsoft Teams has long been criticized for its slow loading time and high system load. Users often complain that it takes a long time for the client to “wake up” and pull data. So far, there have been few changes, but now the company officially confirms the introduction of a new optimization mechanism.

Microsoft to add new process to offload Teams

According to Windows Latest and reports in Microsoft 365 Message Center, Microsoft is introducing an additional process designed to isolate the call stack. It will be named ms-teams_modulehost.exe and will run as a child process of the main client ms-teams.exe.

“We are improving the performance and startup time of call features in the desktop version of Microsoft Teams for Windows. To do this, we introduce a new child process ms-teams_modulehost.exe that will handle the call stack separately from the main process. This optimizes resource usage and improves the quality of calls and meetings.”

In Windows Task Manager, the new module will appear inside the Teams branch of the main process. It will only be responsible for call functions and will reduce the load on the main client.

When to expect improvements

The new mechanism is scheduled to launch in early January 2026, with full rollout by the end of January. Microsoft emphasizes that the timeline may move slightly if fixes to previous builds are needed.

The update requires no action from users: once it’s installed, Teams should launch faster and run smoother without additional customizations. The company also says the new process won’t affect familiar work scenarios.