On Windows 10, Sets was supposed to be a feature to allow users to group apps alongside websites into tabs, just like using your web browser, but across File Explorer, Office apps, Command Prompt, etc.
Now, a recent response Tweet from Microsoft senior program manager, Rich Turner, said (via How-To GeeK) “Shell-provided tab experience is no more,” confirming that the company is no longer working on Sets for Windows 10.
However, it doesn’t mean that we’ll never see some sort of a tab experience on Windows 10, as the senior program manager also added to the Tweet: “adding tabs is high on our to do list,” which could suggest that the original project to bring tabs is dead, but the company may be planning to bring the experience in some other form.
This would make sense, since the original project relied on Microsoft Edge, and the company is now ditching its web browser with a new version based on the Google’s Chromium project. While the company isn’t effectively delivering the message, if there’s still a chance for tabs from coming back, we’ll need to wait until after the new browser is fully integrated into Windows 10.
Update April 22, 2019: A new report from ZDNet confirms that Microsoft has discontinued the feature and has no plans to bring Sets to Windows 10 in the future.