Microsoft released the February 2026 cumulative update for Windows 11, and it finally brings a long-promised feature: the ability to hand off what you’re doing on an Android phone directly to your PC. The update, tagged KB5077181, lets you continue a Spotify playlist, a Microsoft 365 document, or a web session that started on your phone—straight from the Windows taskbar. It’s not just a convenience patch, though: the update also replaces Windows’ decades-old MIDI engine with a modern version, makes Smart App Control far less punishing, and expands the rollout of the refreshed Start menu and colorful battery icons.

Android-to-PC Handoff Arrives with Cross-Device Resume

Cross-Device Resume is the headline attraction. Once enabled, it prompts Windows to surface an alert when you have an eligible activity idling on a paired Android phone—for example, a paused Spotify track or an open Word document in the Microsoft 365 Copilot app. Click the taskbar notification, and the content picks up where you left off, assuming both devices are signed into the same Microsoft account.

Microsoft is rolling out the feature in stages. As reported by Windows Latest, the update currently works with these phone brands: HONOR, Samsung, vivo, Xiaomi, and OPPO. The PC must run Windows 11 24H2 or 25H2 (Build 26100.7840 or 26200.7840 after installing KB5077181), and the phone needs the Link to Windows app or equivalent pairing listed under Settings > Bluetooth & devices > Mobile devices. Even if you install the update, server-side flags may keep the taskbar prompt hidden for weeks.

Supported scenarios:
- Audio playback: continue a Spotify session exactly where you left it
- Microsoft 365: resume editing Word, Excel, or PowerPoint documents via the Copilot/Office mobile app
- Web: some Samsung and Vivo browsers hand off a tab, though precise partner browsers aren’t fully documented yet

Unlike Apple’s Handoff, Cross-Device Resume doesn’t yet cover system-wide clipboard sharing or phone calls. It’s an app-by-app integration that relies on cloud sync and the CrossDeviceResume.exe background process, which has been seen running on Windows 11 devices for months but delivered little until now. For most users, the biggest payoff will be the Spotify handoff—no more fumbling for the phone to restart a playlist after you sit down at your desk.

Windows MIDI Services: Musicians Get a Modern Backbone

Beneath the user-facing features, KB5077181 overhauls Windows’ MIDI stack for the first time in decades. The update introduces Windows MIDI Services, a new engine designed to handle both the classic MIDI 1.0 protocol and the richer MIDI 2.0 standard.

What changed under the hood:
- Dual protocol support: Apps using the old WinMM API and newer WinRT MIDI 1.0 calls continue to work, while middleware translates to MIDI 2.0 messages when possible.
- Shared ports: Multiple applications can now access the same MIDI device simultaneously, eliminating the “port locked by another app” conflict that has plagued Windows musicians for years.
- App-to-app routing and loopback: You can route MIDI between software without physical hardware, and give ports custom names to simplify complex setups.

For musicians and DAW users, this means fewer dropouts, lower latency in theory, and more reliable handshakes with hardware synthesizers and controllers. But the real world demands caution. Every audio interface and MIDI driver sits at the mercy of its manufacturer. If you rely on a fixed studio environment, test KB5077181 on a dedicated machine before updating your main rig. Update your DAW, audio drivers, and MIDI device firmware to the latest vendor-approved versions. Expect the occasional hiccup as the ecosystem adapts to new routing rules.

Smart App Control Finally Plays Nice

Smart App Control (SAC), the security feature that blocks untrusted executables, has been a double-edged sword since its debut. Until now, turning SAC off meant you could never turn it back on without a clean Windows install—a one-way door that pushed many power users to leave it permanently disabled after a false positive.

KB5077181 adds a simple toggle under Windows Security > App & Browser Control > Smart App Control. You can now disable SAC temporarily to install a trusted but unsigned driver, then re-enable it afterward. The change does not alter SAC’s detection model or introduce a per-app allowlist; it merely removes the reinstall requirement.

Practical advice:
- Security-conscious users should leave SAC on as a low-maintenance guard against untrusted installers.
- Gamers and creators should still expect false positives—especially from anti-cheat engines, hardware control suites, and unsigned drivers. Toggle SAC off only for the brief moment you need, then flip it back.
- Before enabling SAC on a well-used machine, back up your system image. It may still block legitimate software that’s been running fine, and you’ll want a quick recovery path.

Start Menu, Battery Icons, and Under-the-Hood Fixes

This update also expands the rollout of a redesigned Start menu that first appeared in preview builds. The new layout puts all apps on a single page, reduces clicks, and adds pre-defined app categories like Music, Productivity, and Other. Unfortunately, you cannot manually move an app from one category to another, and the menu can cover up to 70% of the screen on some displays. Microsoft says it’s aware of the feedback but has no plans to add a resize control.

Colorful battery icons in the system tray are also spreading to more devices, adding a small visual flourish. Meanwhile, a handful of bug fixes address recent pain points:
- Black screen on Nvidia GPUs: Fixed an issue introduced by January’s update that caused black screens at boot or before gaming sessions.
- Storage Settings admin requirement: Microsoft now requires admin rights to open Storage in Settings, likely to prevent unauthorized changes. However, this also removed the ability to clean Windows Update files from Temporary Files. You’ll need the legacy Disk Cleanup tool until a future patch restores that entry.
- Windows Sandbox error 0x800705b4: Patched.
- File Explorer hangs on network locations have been improved.
- Voice Access setup and Narrator options received tweaks.
- Windows Hello can now use external fingerprint readers with Enhanced Sign-in Security.

Why This Month’s Update Weighs Over 4 GB

If you download the offline .msu installer from the Microsoft Update Catalog, expect a file between 4.1 GB and 4.5 GB. That’s not a mistake. Since the Copilot+ initiative, Microsoft has been bundling on-device AI models—like the Phi language model—directly into monthly cumulative updates. The payload includes both the security fixes and the local AI binaries, even on machines without an NPU. Windows will only load the AI components on devices with an NPU rated at 40+ TOPS, but the files sit on disk nonetheless.

For IT admins, this means recalibrating bandwidth and storage estimates. For home users, the online update via Windows Update uses express delivery to shrink the download; the full payload only comes into play if you go the offline route. Feature gating remains in effect: installing the package does not guarantee you’ll see every new behavior, because Microsoft can flip server-side flags or check for specific hardware.

What This Means for Different Users

Home users: The handoff with Spotify and Office is the most tangible gain. If your device receives the feature, you’ll save a few taps each day. The MIDI changes are invisible unless you make music, but they’re a welcome improvement for bedroom producers. The new Start menu is a mixed bag—some will love the reduced clicks, others will miss the customization.

Power users: The SAC toggle alone is worth the update. You can finally experiment with Smart App Control without a reinstall commitment. Large update sizes aren’t an issue if you let Windows Update handle the deltas, but be prepared for a lengthier offline install if you manage multiple PCs.

Musicians and audio professionals: Pilot KB5077181 carefully. The MIDI stack rewrite is a fundamental change that can break old workflows if your DAW or drivers aren’t ready. Test with critical hardware, and keep a fallback image.

IT admins: Plan for multi-gigabyte packages in your WSUS/ConfigMgr environment. Feature gating means you can’t rely solely on binary delivery—validate the actual presence of features on a test ring. For air-gapped systems, the offline .msu is your only path, and you should document DISM removal procedures in case the update must be rolled back.

Before You Click Update

  • Back up. Create a system restore point or a full disk image. This is especially important for workstations that depend on audio drivers or unsigned applications.
  • Test on non-critical hardware if you manage a studio or business fleet. Wait a week or two for community feedback to surface any widespread regressions.
  • Update drivers—audio, GPU, chipset—to the latest versions before installing.
  • For online installation: Open Settings > Windows Update > Check for updates. This uses express delivery and typically finishes in under half an hour on fast connections.
  • For offline installation: Download the correct .msu from the Microsoft Update Catalog for your architecture (x64 or ARM64). Run wusa.exe windows11.0-kb5077181-x64.msu from an elevated command prompt. For image servicing, use DISM /Add-Package.
  • After install: Your system will report build 26200.7840 (25H2) or 26100.7840 (24H2). Check Windows Security for the SAC toggle and look for the Cross-Device Resume prompt in the taskbar. If features are missing, Microsoft may not have enabled them for your device yet.

What’s Next

Microsoft is preparing a full-screen gaming experience (FSE) that this update now detects eligibility for, hinting at future immersion features. Secure Boot certificates are also rolling out gradually via Windows Update. As cumulative updates continue to bundle AI models, expect file sizes to stay large and feature rollouts to remain staggered. The February 2026 update is a clear signal: Windows patches are no longer just fixes—they’re the vehicle for transformative, sometimes messy, feature delivery.