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tech 18 June 2026

Microsoft's New Outlook: A Disappointing Slowdown Compared to Outlook Classic

Microsoft's new Outlook, built on WebView2, takes 10 seconds to perform tasks that Outlook Classic does instantly. A significant challenge for users seeking efficiency.

Article inspired by the original source
Microsoft new Outlook takes 10 seconds to do what Outlook Classic does instantly ↗ www.windowslatest.com

Introduction

Microsoft recently introduced a new version of Outlook for Windows, but users are reporting disappointing performance. The new email client based on WebView2 takes up to 10 seconds to open a simple email notification, a task that Outlook Classic executes in the blink of an eye. Why such a slowdown, and what are the implications for professional users?

A Web-Centric Design

The new Outlook is essentially a browser window loading Outlook.com via WebView2. Microsoft chose this approach to centralize updates and simplify maintenance. However, this choice has notable consequences on the application's responsiveness.

Outlook Classic, on the other hand, is a robust Win32 application that has proven its speed and efficiency over the years. Although criticized for its complexity and sometimes cluttered interface, it remains the favorite of users seeking performance.

Impact on Productivity

In a world where every second counts, the speed difference between the two versions can significantly impact productivity. Professionals juggling multiple tasks cannot afford to wait 10 seconds to read an urgent email.

According to a Radicati Group study, the average number of emails received per day by an office worker is around 121. A 10-second delay per email could lead to a considerable loss of time over a workday.

Why Microsoft Chose This Path

Why does Microsoft persist with this slower version? Several reasons can be advanced. First, web integration allows for better cross-platform compatibility. Secondly, it facilitates the addition of new features that can be deployed without local application updates.

Additionally, maintaining a web application is generally simpler and less costly. However, these advantages do not compensate for some users the loss of performance.

What Can Be Done?

For users frustrated by this slowness, several options are available. They can continue using Outlook Classic as long as it is supported or explore other email clients offering better responsiveness.

In the meantime, Microsoft must find a way to improve the performance of its new Outlook client not to lose the trust of its professional user base.

Conclusion

Transitioning to a web platform poses challenges in terms of performance and user experience. Companies must weigh the advantages of modernity against the potential drawbacks of slowness. The question remains whether Microsoft will succeed in optimizing this version to meet user expectations.

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