Windows 11 Agenda Uses WebView2, Raising Performance Concerns

Windows 11’s Agenda view in the Notification Center now utilizes WebView2, impacting system performance. This update affects how Outlook meeting details are displayed.

Performance and Impact

The Agenda's implementation through WebView2 elevates CPU and memory spikes when the Notification Center is accessed. Observations from preview builds show that memory for the Windows Shell Experience Host can surge from 1 MB to over 130 MB during Agenda view rendering. The surges are linked to multiple WebView2 processes such as GPU and Renderer.

• WebView2 causes CPU and memory surges.
• Memory spikes to 130 MB observed.
• Processes include GPU, Renderer, Utility.

Integration and Features

The Agenda view allows integration with Microsoft 365 Copilot features and provides direct join options for Teams meetings. The interface mimics a chronological calendar list from Windows 10.

There is noticeable user indifference as long as functionality is maintained, but concerns over performance have raised suggestions for either optimizing WebView2 or reverting to native components for key features.

Update: 23 Jun 2026