Microsoft has confirmed that the sidebar app list feature in its Edge browser is being retired in upcoming updates, a move that streamlines the browser's interface while doubling down on the integration of its Copilot AI assistant. The change begins rolling out to users signed into Microsoft accounts, with those still relying on custom sidebar apps given a transitional period before the feature is fully deprecated. This strategic shift reflects a broader realignment of Edge’s role in Microsoft’s ecosystem, prioritizing AI-powered experiences over legacy customization options.

Breaking down the retirement

The sidebar app list, introduced to Edge as a persistent panel of pinned web apps and services, allowed users to access tools like calculator, timer, or third-party integrations directly from the browser frame. Microsoft is now removing the ability to add new apps to the sidebar, effectively sunsetting the feature for the majority of users. Existing custom apps will remain functional for a limited time but will eventually disappear as the browser phases out the framework entirely.

The rollout is tied to Microsoft account sign-in, meaning users who are logged into their Microsoft accounts through Edge will see the changes first. This phased approach gives enterprise admins and individual users a window to adjust, but the end state is clear: the customizable sidebar app list will no longer be part of Edge.

What exactly is the sidebar app list?

For those unfamiliar, the Edge sidebar app list is not the same as the sidebar search pane or the Copilot panel. It’s a dedicated section that houses mini-applications—often third-party—that run in a sidebar-optimized view. Users could add services like Spotify, Instagram, or productivity tools like Todoist. The feature was meant to keep frequently used web apps accessible without leaving the current tab, aligning with Edge’s pitch as a productivity browser.

However, usage patterns and feedback indicated that many users either ignored the sidebar apps or preferred the full Copilot experience. The app list also added complexity to the browser UI, requiring management of permissions and updates. Retiring it simplifies the codebase and reduces maintenance overhead.

Timeline and impact on existing users

Microsoft hasn’t published an exact end-of-life date for the sidebar app list, but the deprecation has already begun with testers in the Dev and Canary channels. Users on the stable release channel can expect to see the changes with a future update—likely Edge 126 or later. The transition starts with the removal of the “Add apps” button and the associated management interface. Eventually, all sidebar apps will stop functioning, and the dedicated sidebar app pane will be repurposed entirely for Copilot and Bing Chat.

For users who have heavily customized their sidebar with productivity apps, this may feel like a loss. The immediate workaround is to pin those web apps as separate tabs or to install them as Progressive Web Apps (PWAs), which offer similar always-available functionality outside the browser frame. Microsoft has been encouraging PWA adoption for years, and this move reinforces that direction.

Copilot stays: A strategic AI move

While the app list disappears, Copilot integration is not only staying but becoming more deeply embedded. Edge’s sidebar will increasingly serve as the home for AI-driven interactions, with Copilot capable of summarizing pages, generating text, and answering questions in context. By clearing out the sidebar app clutter, Microsoft ensures that users’ attention centers on its AI assistant—a core pillar of its broader software strategy.

This isn’t surprising when you consider that Microsoft has been weaving Copilot into Windows 11, Microsoft 365, and even third-party applications. The Edge sidebar becomes a natural extension of that environment, where the browser serves as a launchpad for AI rather than a container for miscellaneous mini-apps. In essence, Microsoft is betting that the future of browsing isn’t about side-by-side apps but about intelligent assistance that proactively surfaces what you need.

Alternatives for lost functionality

For those who will miss the sidebar app list, several alternatives exist:

  • Progressive Web Apps (PWAs): Many sidebar apps were just PWAs in a skin. Install the equivalent PWA from the address bar in Edge to get a separate window with similar capabilities.
  • Favorites bar: For quick access to websites, the favorites bar remains a lightweight option, though it lacks the mini-app interface.
  • Microsoft 365 sidebar: Some productivity integrations (like Outlook or To Do) can be accessed through the Microsoft 365 pane in Edge, which is separate from the sidebar app list.
  • Third-party extensions: For tools that don’t have a PWA version, browser extensions available in the Edge Add-ons store can often replicate specific functions.

Enterprise users who deployed custom sidebar apps via Group Policy will need to revisit their browser configuration. Microsoft is expected to provide guidance on transitioning those managed apps to alternative delivery methods, such as pinned sites in the taskbar or PWA deployment through InTune.

Edge’s evolving identity

Edge’s journey from a Chromium clone to an AI-first browser has been rapid. Just a few years ago, the sidebar app list was marketed as a differentiator against Chrome. Today, that differentiator is receding in favor of Copilot, which represents a more sustainable competitive advantage. Marketshare data shows Edge holding steady at around 12-13% of desktop users, but the growth has slowed. A cleaner, AI-focused experience might be the jolt needed to attract users from Chrome and Safari.

Retiring the sidebar app list also aligns with broader UI simplification across Microsoft’s products. Windows 11’s latest updates have trimmed legacy context menus and consolidated settings, Office apps have collapsed ribbon options, and Teams has streamlined its navigation. In each case, the rationale is the same: remove friction, reduce clutter, and let AI fill the gaps.

Analysis: Streamlining for an AI future

Critics may argue that removing features without a direct replacement can alienate power users. However, this move is less about taking away and more about paving the runway for what’s next. The sidebar will soon house an even more capable version of Copilot, potentially with persistent chat memory, deeper integration with Edge’s collections and shopping tools, and proactive prompts based on browsing behavior. Microsoft has already previewed features like “Copilot in Edge” that can read and summarize PDFs directly in the sidebar, and that’s just the start.

From an enterprise perspective, the deprecation reduces security and manageability concerns. Sidebar apps often ran with elevated permissions or accessed browsing data, posing a risk in sensitive environments. By shifting to PWAs, admins gain better control through standard application management tools, while Copilot offers a controlled and often more secure AI experience governed by organizational policies.

What’s next for Edge users?

In the short term, Microsoft will likely push educational content outlining how to migrate from sidebar apps to PWAs and how to maximize Copilot. The sidebar itself isn’t going away—it’s being repurposed. Expect to see a more dynamic sidebar that adapts to what you’re doing, suggesting Copilot prompts, shopping comparisons, or reading modes depending on the page content.

Long term, Edge’s development will probably accelerate around three pillars: AI assistance, cross-device synchronization, and enterprise security. The sidebar app list was a relic of a time when browsers tried to be operating systems inside an OS. Now, the OS itself (Windows) is becoming more AI-native, and Edge is following suit.

Conclusion

Microsoft’s decision to retire the Edge sidebar app list while preserving Copilot is a clear signal of where the browser is headed. For the average user, the change will be seamless—the sidebar will simply become more useful with less clutter. For power users who customized their sidebar heavily, the transition to PWAs or other alternatives may require a short adjustment period. Ultimately, this move frees up development resources and focuses the user experience on what Microsoft believes is the future: an AI copilot that assists, rather than a shelf of dusty apps that distract. It’s a pragmatic step in Edge’s evolution from a me-too browser to a platform for intelligent, personalized web interactions.