Microsoft Explains Why Windows 11 Modernization Is So Slow

Windows 11 modernization remains a major priority for Microsoft, but compatibility requirements continue to slow the removal of older interfaces.

Microsoft wants to replace legacy menus, dialogs, and system tools without breaking software, drivers, administrative processes, or established customer workflows. Marcus Ash, Microsoft’s design and research lead for Windows and Devices, explained the challenge in an interview reported by Windows Central.

The company also wants each replacement to match the functionality, performance, and reliability of the interface it removes.

Microsoft will retire Control Panel features gradually

Microsoft plans to move individual Control Panel sections into the Settings app only after Settings offers equivalent functionality.

This gradual approach reduces the risk that a Windows update will disrupt devices, business systems, specialist software, or administrative workflows. It also explains why Control Panel and Settings continue to contain overlapping options.

Some older interfaces may remain available when customers still rely on them. Microsoft considers backward compatibility one of Windows’ main strengths, even when that support makes the operating system less visually consistent.

WinUI 3 remains central to the modernization effort

Updating Windows requires more than redesigning individual windows. Microsoft must also improve development frameworks such as WinUI 3 so they can handle the advanced functionality found in older system tools.

Legacy interfaces often contain features developed and refined over several decades. New versions must reproduce those capabilities without reducing performance or introducing reliability problems.

Microsoft has already reaffirmed its intention to modernize the Windows 11 interface with WinUI 3. Ash said the company wants to accelerate this work while avoiding disruption for customers.

Each replacement must also complete compatibility and reliability testing before Microsoft can remove the older version.

Usage data determines which areas receive attention

Microsoft uses telemetry, customer feedback, usage patterns, and framework readiness to decide which interfaces to update first.

Frequently used features and experiences that generate significant criticism receive higher priority. Development teams also consider whether current tools can reproduce all required functions.

Microsoft now examines the complete user journey when redesigning an interface. Teams review where a task begins, which menus and applications users encounter, and how they complete the process.

This approach should create more consistent workflows instead of adding isolated modern dialogs that still lead users into older interfaces.

File Explorer remains a major priority

File Explorer ranks among Microsoft’s most important modernization projects because customers use it throughout Windows.

Microsoft has already introduced several visual and functional changes, but parts of the application still rely on legacy components. Replacing them requires careful testing because File Explorer supports a wide range of file operations, extensions, network features, and third-party integrations.

Other commonly used Windows applications and system tools also remain under review. Microsoft wants to reduce how often users encounter outdated interfaces during everyday tasks.

Microsoft is investigating Registry Editor changes

Registry Editor represents a more difficult modernization target because administrators and advanced users rely on established workflows.

Any redesigned version would need to maintain compatibility with existing registry operations, scripts, permissions, and enterprise requirements. Ash described the work as an early investigation rather than a confirmed replacement scheduled for Windows 11.

Microsoft may also develop new engineering tools that make it easier to update older applications without rebuilding every component from the beginning.

More Windows 11 interface changes are coming

Microsoft continues to work on other interface improvements while its broader modernization effort progresses.

A Windows 11 right-click menu overhaul could make contextual menus faster and more customizable. Microsoft is also testing changes designed to make Windows 11 Search faster and less cluttered.

However, Microsoft must first improve its development frameworks, rebuild each interface, and verify compatibility. That engineering process explains why Windows still contains older menus and dialogs more than a decade after Microsoft began introducing its modern design language.