Windows 11 Insider Preview Build 26120.3281 (KB5052086), released to the Dev and Beta Channels on February 14, 2025, added a way to resume certain OneDrive files from a phone on a PC, alongside changes to File Explorer, taskbar sharing, Recall, and accessibility. It is a dated preview based on Windows 11 version 24H2—not a guarantee that every feature reached every Insider or became part of a public Windows release.
What is Windows 11 build 26120.3281 (KB5052086)?
Microsoft released this Windows 11 Insider Preview build to the Dev and Beta Channels on February 14, 2025. The update was based on Windows 11 version 24H2 and was initially optional for Beta Channel participants. Microsoft described many of its features as gradual or experimental rollouts, so channel membership alone did not mean a feature would appear immediately. Microsoft’s announcement is the source for the changes and known issues listed below.
How to resume a OneDrive file from your phone on your PC
The headline addition was a gradual-rollout feature that could prompt you to continue working on a supported OneDrive file you had recently opened on an iOS or Android phone. When it worked, the file opened on the PC in its default browser.
Requirements and timing
- Sign in to OneDrive on the phone and Windows on the PC with the same Microsoft account. Microsoft said work and school accounts were not supported for this feature.
- Open the file on the phone while the PC is locked, then unlock the PC within five minutes. That timing can trigger the resume prompt; it does not guarantee a prompt for every user.
- The announcement listed Word, Excel, PowerPoint, OneNote, and PDF files as supported types.
- The setting is at Settings > Apps > Resume.
Other changes in the Dev Channel rollout
Microsoft described the following changes for the Dev Channel. Their availability was subject to controlled feature rollout, and the announcement did not say that all Insiders would receive each one at once.
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Recall, taskbar, and window management
- Recall: A system-tray flyout made it easier to filter Recall activity. Recall is relevant to eligible Copilot+ PCs; this announcement does not make it a general feature for every Windows 11 computer.
- Taskbar jump lists: Users could share files directly from a supported app’s jump list.
- Snap: Explanatory messages were added to help users understand Snap suggestions.
File Explorer, Spotlight, and Settings
- File Explorer tabs: Tabs could be restored after signing in when the relevant window-restoration setting was enabled.
- Start backup reminder: The File Explorer reminder gained options to snooze it or turn it off.
- Windows Spotlight: Microsoft changed some interactions for discovering Spotlight information.
- Settings home: Eligible PC Game Pass subscribers could see a referral card.
Location History removal
Microsoft said it was removing the Location History feature and API that Cortana had used to access up to 24 hours of device location history when location was enabled. This describes the change announced for the preview; it is not a statement about the current status of every Windows location feature.
Accessibility improvements and fixes
The build increased text-scaling support in File Explorer and file dialogs. Microsoft also listed fixes for several issues, including:
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- Equipped with a blazing fast Core i5 2.00 GHz processor.
- High DCOM CPU usage shown in Task Manager.
- Resetting a password from the lock screen.
- A File Explorer menu opening in the wrong direction.
- Clock spacing on multi-monitor setups.
- Windows Search behavior on Snapdragon-powered Copilot+ PCs.
- Mouse color resetting around a User Account Control prompt.
- Settings crashes.
- Guest sign-in on Shared PCs under a specified DeviceLock policy condition.
The fixes are those Microsoft reported in the February 14, 2025 announcement; the post does not establish the later servicing status of each issue.
Known issues Microsoft reported at release
Microsoft’s post listed the following problems at publication. They are release-time caveats, not confirmation that these issues remain unresolved today.
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- 14" diagonal, 1366x768 resolution, HD BrightView LED, Glossy NON-TOUCH Display
- A PC reset could leave the displayed build number incorrect.
- Recall could have snapshot-saving or settings problems.
- Click to Do could have issues.
- Live Captions could crash in certain launch or language-switching situations.
- File Explorer could close slowly for some Insiders.
- Battery icon colors could appear incorrectly with certain custom color settings.
How rollout and channel availability worked
Microsoft used Controlled Feature Rollout for many changes, meaning a subset of Insiders could receive a feature before a wider rollout. The announcement said users could enable the latest-updates toggle in Windows Update to receive gradual feature rollouts sooner, but that did not guarantee immediate access. Preview features could change, be removed, or never ship beyond Windows Insider builds. Dev and Beta were parallel development paths; Microsoft noted a feature could appear in Beta before Dev.
At the time, Microsoft also described a limited window for Dev users to switch to Beta while both channels received matching 24H2-based build numbers. That window was due to close when Dev moved ahead. This was February 2025 guidance, not evidence that the same switching option is available now.
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- RESPONSIVE MULTITASKING & STORAGE: Built with 4GB LPDDR4 RAM and 128GB eMMC storage for smooth daily essential use. Expand your storage by up to 1TB via the integrated TF card slot to easily store movies, photos, and working files
- ADVANCED CONNECTIVITY: Outfitted with 2x Full-Featured Type-C ports for data transfer, fast charging, and dual-monitor output, alongside 2x USB 3.2 Gen1 ports and a 3.5mm audio jack for complete peripheral compatibility
- LIGHTWEIGHT & SILENT OPERATION: Slim and portable for effortless travel or commuting. Features a 1MP HD webcam for remote meetings, 38Wh battery with 45W Type-C fast charging, and a fanless silent design for peaceful work environments.
Should you install or evaluate this build?
Build 26120.3281 is most useful to understand as a historical Insider preview, rather than as a general Windows 11 update recommendation. At release, Beta participants initially received it as an optional update, while Dev users were on a separate preview path. Feature access depended on rollout eligibility; using OneDrive resume also required the specified personal Microsoft-account setup, and Recall applied to eligible Copilot+ PCs. The announcement does not establish current enrollment rules, subsequent fixes, or which features later shipped, so it cannot support a present-day installation recommendation.
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- 【Vibrant Display】 15.6-inch Full HD (1920x1080) anti-glare screen with 16:9 aspect ratio delivers crisp images and vivid colors – perfect for studying, watching lectures, or entertainment. Thin-bezel design maximizes viewing area
- 【Fast Connectivity & Expansion】 Equipped with WiFi 6 (802.11ax) and Bluetooth 5.2 for stable, high-speed wireless. Features 3 x USB 3.0, HDMI 2.1, Type-C (supports PD3.0 fast charging), and a TF card slot expandable up to 2TB – easily connect external monitors, mice, drives, or expand storage for all your files
- 【Long Battery Life & Portable】 Built-in 11.55V 5000mAh/57.75Wh high-capacity battery delivers approximately 7 hours of mixed-use battery life – enough for a full day of classes and assignments. Lightweight at just 1.63kg (3.6 lbs) and 19.5mm thin, plus a compact packing size – easily slips into a backpack for campus, library, or coffee shop
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