Microsoft dropped a fresh pair of Release Preview builds on June 12, 2026, targeting the two newest branches of Windows 11: version 24H2 (build 26100.8728) and the upcoming 25H2 release (build 26200.8728). The updates land as cumulative patches, aiming to squash bugs and refine the experience before these features roll out to the general public. Chief among the improvements, according to the official release notes, is a set of fixes for touchpad behavior that had been frustrating testers on laptops and precision trackpads. The builds also carry behind‑the‑scenes changes for enterprise networking and File Explorer, though Microsoft’s published summary kept the spotlight on input reliability.

The Release Preview channel occupies a unique spot in the Windows Insider gauntlet — it’s the last stop before production. Insiders in this ring get early access to what will ship to all users in the coming weeks, making it a critical hardening phase. The two‑build drop reflects Microsoft’s parallel servicing strategy: 24H2, the current feature update that began rolling out in late 2024, continues to receive monthly refinement, while 25H2 builds are being flighted to validate the next wave of changes. By delivering both under one announcement, the Windows team signals that the 25H2 feature set has stabilized enough to warrant Release Preview status, even if the public launch is still months away.

What’s inside build 26100.8728 (version 24H2)

The update for Windows 11 version 24H2 is a Cumulative Update Preview that will eventually become a mandatory Patch Tuesday release unless critical issues emerge. Build 26100.8728 brings a handful of quality‑of‑life fixes, many of them distilled from feedback in the Beta and Dev channels over the past quarter. While Microsoft’s abbreviated changelog highlights the touchpad, testers digging into the package will likely find the usual assortment of threading tweaks, memory management patches, and security hardening. For enterprises, this build refines SMB over QUIC and NTLM authentication flows — areas that have been under active development since 24H2’s debut. Network administrators watching the Insider ring can now test those changes in a full‑fidelity environment before they land on production endpoints.

File Explorer sees a subtle correction that fixes a long‑standing annoyance: folder thumbnails that occasionally fail to render when Quick Access is pinned to the navigation pane. The bug, although minor, broke the visual coherence of the file manager and prompted a steady trickle of Feedback Hub reports. With this build, the Windows shell team is also testing an updated caching mechanism for the search indexer, aiming to reduce disk I/O on systems with large document libraries.

What’s inside build 26200.8728 (version 25H2)

Build 26200.8728 is the first Release Preview flight for the 25H2 development codestream, which insiders have been dogfooding in the Dev and Beta channels since early 2025. The cumulative package carries forward all the fixes from the 24H2 sibling build plus a set of 25H2‑specific adjustments. Chief among them is a reworked touchpad stack that leverages the new Human Presence Sensor API introduced in a previous Dev build. The result, according to early testers, is a marked reduction in cursor lag when the device wakes from Modern Standby — a scenario that has plagued convertible laptops since the transition to always‑connected power states.

The 25H2 Release Preview also rolls out a refreshed network configuration sidebar in the Settings app, which began testing in March 2026. The sidebar collapses Ethernet, Wi‑Fi, VPN, and proxy settings into a single searchable pane, reducing the number of clicks needed to toggle a proxy or configure a static IP. Enterprise IT admins will appreciate that the experience respects Configuration Service Provider (CSP) policies from day one, meaning they can lock down the sidebar layout through MDM without waiting for a feature update.

Touchpad fixes: what’s actually changing

Both builds share a common kernel‑level patch that addresses irregular touchpad polling when the system is under mixed CPU and GPU load. Insiders who play games or run GPU‑accelerated apps on laptops have reported that the cursor becomes jerky or stops responding for fractions of a second. The root cause turned out to be a power‑throttling conflict between the PEG (PCI Express Graphics) power state engine and the input stack’s latency‑sensitive interrupt handler. Microsoft’s engineering team introduced a new interrupt affinity rule that pins touchpad processing to a dedicated efficiency‑core cluster, isolating it from the GPU’s power transitions. The change does not degrade battery life in any measurable way, according to telemetry gathered during the Beta phase.

A second touch‑related fix targets three‑finger and four‑finger gesture recognition. Since the December 2025 Cumulative Update, some users found that custom gestures — such as swiping up to open Task View or swiping left to switch virtual desktops — would randomly revert to default actions after the laptop resumed from hibernation. Build 26100.8728 and 26200.8728 restore gesture persistence by storing the user‑defined mappings in a non‑volatile registry hive that loads earlier in the boot process. The patch also cleans up stale virtual touchpad data that could accumulate when an external tablet was disconnected, a welcome fix for artists using Wacom‑compatible peripherals alongside a laptop’s precision touchpad.

Enterprise networking and manageability

Administrators managing fleets of Windows 11 machines have more reasons to pay attention to these builds. The 24H2 update introduces a new network address translation (NAT) helpers for containers that integrate with the latest Windows Subsystem for Linux (WSL2) release. The change allows Hyper‑V virtual switches to handle overlapping IP ranges more gracefully, something that DevOps engineers have been requesting since the introduction of mirrored networking mode. Meanwhile, the 25H2 build experiments with a centralized certificate store that can be updated via Windows Update without requiring a reboot, a feature designed to streamline TLS 1.3 certificate renewal in zero‑trust environments.

On the manageability side, both builds include a new version of the Windows Update for Business deployment service that can monitor driver rollout compliance. IT pros can now query a machine’s driver inventory directly through the Microsoft Graph API, compare it against a baseline configuration, and flag discrepancies before a full fleet rollout. The feature is opt‑in and requires no additional licensing beyond the E3/E5 subscription, making it accessible to mid‑size businesses that rely on Intune for endpoint management.

File Explorer and shell tweaks

Beyond the thumbnail caching fix, File Explorer receives two additional hardening patches. The first corrects a memory leak that occurred when extracting a large .zip file from the context menu; the leak could balloon the explorer.exe process to over 2 GB of RAM after extracting several large archives in a row. The second resolves a Get‑ChildItem PowerShell hang that would freeze File Explorer’s progress dialog indefinitely when the user canceled a recursive file copy mid‑operation. Both bugs were flagged by developers inside Microsoft who use Windows as their daily driver, underscoring how dogfooding catches edge‑case issues that might slip past a traditional test matrix.

The 25H2‑specific shell work also touches the taskbar. The system tray overflow area now respects the new “always show all icons” toggle that was promised in a February 2026 Dev build, finally putting an end to the whack‑a‑mole game of pinning and unpinning icons. Power users who customize the notification area can export their layout via a simple PowerShell cmdlet, a boon for desktop administrators who image thousands of machines.

Known issues and watch points

No Release Preview is completely free of gremlins, and Microsoft has published a short list of open issues for these builds. Insiders running 25H2 on Copilot+ PCs with Qualcomm Snapdragon X Elite processors may notice that the touchpad’s haptic engine does not fire when switching desktops via a gesture; the feedback strength slider still works for clicks, but the gesture‑tied rumble is absent. Microsoft says a firmware update from OEMs will be required to restore full functionality, and a placeholder driver patch is under development.

Both builds exhibit a rare race condition that can cause the Start menu to become unresponsive for up to ten seconds after waking the machine from a deep sleep state. The issue has existed since the Beta phases and, while reduced in frequency, remains under investigation. A temporary workaround involves disabling the “show recently opened items in Start, Jump Lists, and File Explorer” setting.

IT professionals should also note that the 25H2 build explicitly requires the April 2026 Servicing Stack Update (SSU) to be installed first. Machines that skip the SSU will see a 0x800f0923 error during the cumulative update installation. Microsoft documents the dependency on the Insider blog, but the requirement is easy to overlook when deploying the build through WSUS.

How to get the builds

Insiders who have opted into the Release Preview channel through Settings > Windows Update > Windows Insider Program can fetch the new builds by clicking “Check for updates.” The system should automatically pull down build 26100.8728 if running version 24H2, or build 26200.8728 if already on the 25H2 track. Freshly enrolled machines will need to complete the standard flight‑signing process, which may take up to two hours depending on telemetry upload.

Organizations that manage Insider builds via policies or Intune can target the builds by selecting the “Release Preview” ring in their update configuration. Microsoft recommends deploying these builds to a small pilot group of IT‑curated devices first, as the 25H2 build still carries the “pre‑release” watermark and is not eligible for direct Microsoft Support.

What these builds mean for the Windows release cadence

Shipping a Release Preview for 25H2 in June 2026 aligns with the annual feature‑update tempo Microsoft has maintained since Windows 11’s launch. If history is any guide, 25H2 will reach the General Availability milestone in September or October, giving OEMs a solid quarter to bake the final bits into their holiday‑season hardware. The 24H2 cumulative update, meanwhile, will likely be reissued as a production “B” release on the July or August Patch Tuesday, widening the benefits of the touchpad and networking fixes to all compatible Windows 11 PCs.

The parallel servicing model also signals that the 24H2 branch isn’t being abandoned after 25H2 ships. Enterprises that standardize on 24H2 for another year will continue to receive quality updates through the regular Cumulative Update flow, while enthusiasts and early adopters can move to 25H2 for the latest shell and networking enhancements.

The bigger picture for Windows 11 users

Touchpad reliability might not sound like a headline‑grabbing feature, but it sits at the intersection of hardware‑software integration that can make or break the daily computing experience. A laptop whose cursor stutters under load erodes user confidence, especially among creative professionals who rely on precise input. By addressing the root cause at the kernel level and adding a dedicated efficiency‑core assignment, Microsoft’s engineering team is tackling a class of problem that will become more common as hybrid CPU architectures — with their heterogeneous core clusters — dominate the PC landscape. The fix also illustrates how the Insider program can accelerate the feedback loop, turning months of Beta‑channel telemetry into a hardened patch that arrives in a Release Preview within weeks.

For IT departments, the networking and manageability improvements show that Windows 11’s roadmap isn’t just about consumer flair. SMB over QUIC, certificate updates without reboots, and Graph‑based driver compliance checks are features that directly lower the total cost of ownership for Windows fleets. By landing these capabilities in a Release Preview six months ahead of the autumn general availability, Microsoft is giving administrators a generous runway to validate the features in their own environments — a pace that enterprise customers have long demanded.

Looking ahead

With 25H2 now in the Release Preview channel, the Insider team will likely pivot to pushing 26H1 builds to the Dev channel before autumn. The current 25H2 flights will receive additional cumulative updates in the coming weeks, each bringing the stability bar closer to general release. Testers should keep an eye on the Feedback Hub for an updated quest that validates the touchpad gesture persistence and the network configuration sidebar — these are the features Microsoft is most eager to hear about.

For everyone else, the June 12 builds are another data point that Windows 11’s iterative evolution remains on track. As the platform inches toward its fifth birthday, the cadence of quality‑of‑life polish delivered through the Insider rings proves that the operating system isn’t just coasting on its installed base. The touchpad fixes arriving today might be the reason a thousand fewer users click “restart” in frustration tomorrow.