For nearly a decade, Microsoft Edge labored to distinguish itself from the dominant Google Chrome browser through a suite of innovative, productivity-focused features. Two of its most celebrated tools—Collections and the Sidebar—became hallmarks of a vision that positioned Edge not just as a web browser, but as a comprehensive workspace for research, shopping, and organization. That era has now officially ended. With the release of Microsoft Edge version 149 on June 4, 2026, both Collections and the Sidebar have been removed. This decision marks a dramatic pivot in strategy, as Microsoft clears the deck to prioritize its artificial intelligence ambitions, centered on the Copilot assistant. For users who built their digital workflows around these features, the change is abrupt, disruptive, and signals a fundamental reassessment of what Microsoft wants its browser to be.
Microsoft Officially Removes Collections from Edge
When Microsoft first introduced Collections, it was marketed as a revolutionary method for organizing information discovered across the web. The feature allowed users to save webpages, products, research materials, travel plans, images, and notes inside customizable groups. Unlike traditional bookmarks, which serve as static links to destinations, Collections were designed for active projects. Users could place products side by side while shopping, gather sources for academic research, or assemble travel itineraries without relying on dozens of open tabs.
Microsoft repeatedly described Collections as a workspace built around real-world internet behavior. The company argued that users needed more than simple bookmark folders; they required an environment where information could be collected, analyzed, compared, and shared efficiently. The feature also integrated with applications like OneNote and Outlook, allowing users to export organized content while preserving formatting and context. For years, Microsoft positioned Collections as one of Edge’s signature capabilities.
Why Collections Was Different from Traditional Bookmarks
At first glance, many users compared Collections to ordinary bookmarks. However, Microsoft believed the two concepts served fundamentally different purposes. Bookmarks were designed for saving destinations. Collections were designed for gathering information. Instead of simply storing website links, Collections enabled users to save images, notes, product details, articles, and entire research projects inside structured visual boards.
For online shoppers, the feature offered a convenient method of comparing products across multiple retailers. For students, it created a centralized location for organizing research. For professionals, it simplified information gathering and collaboration. The feature represented an attempt to solve a practical problem that bookmarks could not: people collect information differently than they save websites. Bookmarks are destinations. Collections were projects. That distinction mattered, and Microsoft spent years educating users about it. The irony is difficult to ignore: a feature once marketed as essential has now become expendable.
Users Risk Losing Their Saved Data
One of the most significant concerns surrounding the removal is the potential loss of user data. Microsoft confirmed that Collections became unavailable starting with Edge 149. Users were advised to export their Collections or transfer saved pages into Favorites before updating. Those who upgraded without backing up their data discovered that their Collections were no longer accessible. For many users who spent years organizing research, shopping lists, work projects, and travel plans inside Collections, the removal feels abrupt and disruptive. The situation highlights a recurring challenge within modern software ecosystems: features that users invest years building workflows around can disappear when corporate priorities change.
Sidebar Also Disappears from Edge 149
Collections is not the only casualty of this strategic shift. The Sidebar feature has also been removed from Edge 149. The Sidebar allowed users to access lightweight versions of services such as Outlook, Bing, and other web applications without opening additional tabs. Positioned along the right side of the browser, it offered a convenient multitasking environment that many productivity-focused users appreciated. Unlike split-screen browsing, the Sidebar maintained a cleaner workflow by allowing users to switch between full-page browsing and quick-access tools with minimal interruption. Microsoft heavily promoted the Sidebar when it launched, presenting it as another differentiating feature that separated Edge from competitors. Today, it joins Collections in the list of discontinued Edge features.
Copilot Remains the Centerpiece of Edge’s Future
Although the Sidebar has been removed, Microsoft has clarified that Copilot is not going anywhere. In fact, the company suggests that removing the Sidebar will help streamline development efforts and accelerate Copilot improvements. Users upgrading to Edge 149 are immediately greeted by an expanded Copilot experience. The browser now places greater emphasis on AI-powered interactions, including both text-based and voice-driven assistance. The message from Microsoft is increasingly clear: the company is betting its browser’s future on artificial intelligence. Features that do not directly support that strategy appear to be receiving less attention or being removed entirely.
The Transformation of Edge into an AI Browser
Over the last several years, Microsoft Edge has undergone a remarkable transformation. Initially launched as a Chromium-based competitor to Chrome, Edge focused on performance, productivity, and practical features that enhanced browsing. The browser introduced vertical tabs, sleeping tabs, Collections, the Sidebar, workspaces, and various organizational tools intended to make browsing more efficient. Today, many of those differentiators are fading into the background. For longtime users, Edge increasingly feels less like a productivity browser and more like a platform built around Microsoft’s AI ambitions. The browser is moving from knowledge storage toward knowledge generation—a fundamental strategic change.
Microsoft’s Growth Story Continues Despite User Frustration
From a business perspective, Microsoft can point to impressive numbers. Edge currently maintains approximately 9% of the desktop browser market, a significant achievement considering Chrome’s overwhelming dominance. Microsoft CEO Satya Nadella has also highlighted that Edge experienced growth for 20 consecutive quarters, demonstrating consistent momentum. These figures suggest that Microsoft’s overall strategy is working from a market-share perspective. However, growth metrics do not necessarily indicate user satisfaction. The decision to remove beloved productivity tools may create a disconnect between the company’s reported success and the actual experience of its most loyal users.
What This Means for Edge Users Going Forward
The removal of Collections and the Sidebar represents more than a routine software update. It symbolizes a philosophical shift inside Microsoft. The company once emphasized helping users organize information, manage research, and improve productivity through specialized browser tools. Today, the emphasis is increasingly focused on AI-driven assistance and conversational computing. Whether this strategy ultimately strengthens Edge or weakens its appeal remains uncertain. What is clear is that Microsoft is betting heavily on artificial intelligence becoming the primary way users interact with the web. The disappearance of Collections and the Sidebar shows just how willing the company is to sacrifice established features in pursuit of that future.
A Deeper Look: Assessing the Strategic Pivot
Microsoft’s decision reveals a larger trend affecting the technology industry. Companies are increasingly prioritizing AI integration over traditional feature development. The assumption is that AI can eventually replace many specialized tools. However, history suggests that removing functionality before replacements mature often creates frustration. Collections solved a practical problem. The same applies to the Sidebar, which offered quick multitasking without cluttering browser windows. Many users adopted it because it improved workflow efficiency. Its removal sends a signal that productivity tools are no longer receiving the same level of strategic importance.
The broader concern involves product identity. Why should users choose Edge instead of Chrome? Historically, the answer involved unique features: Collections, the Sidebar, vertical tabs, workspaces, and integrated productivity experiences. As more emphasis shifts toward Copilot, differentiation becomes less obvious. AI assistants are rapidly appearing everywhere. Google has Gemini. OpenAI powers numerous integrations. Apple is building AI capabilities. Mozilla is experimenting with AI tools. Artificial intelligence alone may not be enough to establish a lasting competitive advantage. Users often remain loyal because of workflows, not marketing slogans. When workflows are disrupted, trust can erode.
Another issue is feature permanence. Consumers invest time learning software. Businesses train employees. Students build research systems. Removing long-standing functionality creates hidden costs that rarely appear in quarterly reports. Microsoft may believe AI represents the future. That prediction may ultimately prove correct. Yet successful technology companies typically add new capabilities while preserving valuable existing ones. The strongest products evolve without forcing users to abandon proven habits. Edge’s recent direction suggests replacement rather than evolution. Whether users embrace that strategy will determine the browser’s next phase of growth. If Copilot becomes genuinely transformative, Microsoft may justify these decisions. If not, Edge risks losing some of the characteristics that helped it gain market share in the first place.
Technical Perspective and Browser Workflow Impact
The removal of Collections and the Sidebar affects both user experience and workflow architecture. Collections acted as a lightweight knowledge-management system. Many users unknowingly used it as a personal research database. A typical workflow might involve gathering source articles, adding notes, comparing products, and saving images, all within a single project that could be exported to OneNote. Without Collections, users may need to turn to external tools such as OneNote, Notion, Obsidian, Joplin, or Evernote to replicate this functionality.
Power users often relied on this browser-based organization because it maintained context. Bookmarks preserve access. Collections preserve context. From a productivity engineering standpoint, context is more valuable than links, organization is more important than storage, and workflow is more critical than features. Microsoft’s new AI-first architecture is now centered on a different flow: a user query is processed by Copilot, which generates an AI response and suggested actions. The previous Edge architecture looked closer to user activity being captured in Collections, organized, and then exported or shared. This shift from knowledge storage to knowledge generation represents a fundamental change in how the browser is intended to be used.
The lesson for users is clear: critical information should never depend exclusively on a browser feature that a vendor can remove through an update. External tools and local backups provide permanence that browser-specific features cannot guarantee.
Key Facts and Future Outlook
Microsoft Edge version 149 officially removed Collections beginning June 4, 2026. Microsoft warned users to export or migrate Collection data before upgrading to avoid losing saved content. The Sidebar was removed in Edge 149, while Copilot functionality remains supported and continues to receive expanded integration. The available information strongly supports the conclusion that Microsoft is shifting Edge toward an AI-centric strategy. While user reactions may vary, the feature removals themselves are factual and confirmed. The broader debate revolves around whether AI-focused development can adequately replace the productivity value these discontinued tools once provided.
Looking ahead, Microsoft will likely continue investing heavily in Copilot, introducing deeper AI-powered browsing, page summarization, workflow automation, and voice interactions directly within Edge. If Copilot delivers meaningful productivity gains, Edge could continue its growth trend and potentially reach double-digit desktop market share over the next several years. However, longtime Edge enthusiasts who adopted the browser specifically for Collections and the Sidebar may migrate toward browsers and productivity ecosystems that offer stronger organizational workflows. If Microsoft removes additional legacy productivity features in favor of AI-focused redesigns, user dissatisfaction could increase despite overall market-share growth. The next generation of Edge will likely be judged less as a browser and more as an AI operating environment for web interaction, making Copilot’s success critical to the platform’s future.
