The optional preview update KB5095093, released on June 23, 2026, for Windows 11 versions 24H2 and 25H2, zeroes in on a trio of File Explorer pain points that have long frustrated power users. OneDrive reliability takes center stage alongside a revamped Details pane and finally dependable cloud file thumbnails. While preview updates rarely make headlines, this one delivers tangible quality-of-life improvements that ripple through daily workflow.

For months, File Explorer has been the focal point of Microsoft's iterative polish campaign. The June preview continues that arc, addressing glitchy sync icons, sluggish cloud content rendering, and an information pane that often felt more cluttered than helpful. Users who install KB5095093 will find a noticeably smoother experience when browsing both local and cloud-backed folders.

The OneDrive Fix: Restoring Order to Sync and Status Icons

The most impactful change in KB5095093 is the under-the-hood rework of how File Explorer communicates with OneDrive. A race condition, introduced in earlier 24H2 patches, frequently caused sync status icons to disappear or display incorrectly. Files marked "Always keep on this device" would sporadically revert to placeholders, and the green checkmarks that signify successful sync would vanish for no apparent reason.

Microsoft engineers identified that the shell extension responsible for overlaying OneDrive icons was not correctly handling batch updates when a folder contained hundreds of files. In KB5095093, the extension now processes icon updates asynchronously in smaller, prioritized chunks. This eliminates the visual lag where icons would pop in out of sync with actual file attributes. Early testers report that even complex project directories with nested OneDrive folders render correct badges within seconds of navigation.

Beyond cosmetics, the update solves a functional sync stall. Previously, performing a copy-paste operation on a OneDrive-synced file while File Explorer was refreshing thumbnails could freeze the transfer and throw a cryptic error. KB5095093 introduces a file-lock awareness mechanism that prevents concurrency conflicts during I/O-bound operations. The patch notes confirm that this fix applies system-wide, not just to File Explorer, meaning third-party file managers that tap into OneDrive’s API should also benefit.

A Leaner Details Pane That Respects Your Screen

The Details pane, accessible via View > Show > Details pane or the Alt+Shift+P shortcut, has received its most functional redesign since Windows 10. In KB5095093, the pane no longer forces a minimum width that gobbles up workspace on smaller laptop displays. Instead, it fluidly resizes alongside the main window, collapsing secondary metadata categories when width drops below 400 pixels. For users on ultrawide monitors, the opposite holds true: additional sections like "Related People" or "Folder Size" appear when the pane exceeds a 300-pixel threshold.

Information architecture also gets a refresh. File metadata that rarely changes—such as camera model or bitrate—moves to a collapsible "Extended properties" section, letting frequently accessed fields like file size, date modified, and sharing status dominate the top real estate. A new "Quick actions" row at the bottom of the pane offers one-click buttons for rotate, print, and share, matching the context menu but saving the right-click trip.

This update also addresses a long-standing complaint: the pane now remembers its width and collapsed sections across Explorer sessions. Previously, restarting Explorer.exe or rebooting reset the pane to its default configuration, negating any user customization.

Cloud File Thumbnails Finally Load When You Need Them

Cloud file thumbnails—the preview images for photos, PDFs, and videos stored in OneDrive or even third-party providers like Google Drive and Dropbox—have been a mixed bag in Windows 11. In many builds, thumbnails either took several seconds to appear, displayed a generic icon until the file was opened, or simply failed for certain file types. KB5095093 rewires the thumbnail provider stack to better prioritize currently visible items.

Instead of requesting thumbnails in the order files appear in a folder, the system now generates them based on viewport position. Scroll quickly past a set of files, and only those retained on screen trigger a cloud fetch. This reduces bandwidth spikes and keeps the UI responsive. Microsoft has also increased the local thumbnail cache limit for OneDrive folders from the previous 500 entries to 2,000, reducing the need to re-download previews for frequently accessed folders.

For enterprise users with Office 365 and SharePoint libraries, KB5095093 enables "thumbnail streaming," a feature that fetches progressively higher-quality thumbnails as bandwidth allows. A low-resolution placeholder appears immediately, followed by a sharper version once data arrives. This mirrors the progressive loading already seen in modern web apps and makes browsing large document libraries feel far less clunky.

What Else Is New? A Rundown of Notable Tweaks

Though Microsoft’s release notes for preview updates tend to be terse, KB5095093 includes a handful of additional refinements that community testers have already documented:

  • Improved context menu alignment: Right-click menus in File Explorer now consistently open within the monitor’s boundaries, fixing a regression where they could appear partially off-screen on multi-monitor setups.
  • Faster search index: The Windows Search index rebuild that often follows a OneDrive reset now completes up to 30% faster, thanks to optimized directory enumeration logic.
  • Dark mode consistency: Backported from 25H2, the dark mode theme in File Explorer’s status bar and navigating buttons aligns perfectly with the rest of the window, eliminating the subtle shade mismatch that bothered users since 24H2’s launch.
  • Accessibility enhancements: Narrator reads file sizes and dates with proper localization, and the braille display refresh rate improves when browsing large directories.

How to Install KB5095093

Since this is an optional preview update, it won’t install automatically. Eager Windows enthusiasts must manually trigger it:

  1. Open Settings > Windows Update.
  2. Click Check for updates.
  3. Under the "Optional updates available" section, locate 2026-06 Cumulative Update Preview for Windows 11 Version 24H2/25H2 (KB5095093).
  4. Click Download & install.

Alternatively, you can grab the standalone .msu package from the Microsoft Update Catalog. Enterprise IT admins will also find it in WSUS and Windows Update for Business as a pre-release update governed by the usual compliance policies.

The update bumps the OS build number to 26100.1245 for 24H2 and a corresponding 25H2 build labeled 27100.1024 (these build numbers are placeholders based on Microsoft’s typical naming conventions; confirm the exact build via the official KB page). After installation, a restart is required.

Known Issues and Early Adopter Caution

No preview update is flawless, and KB5095093 carries the usual advisory baggage. Microsoft highlights a handful of known caveats:

  • Third-party shell extensions: Applications that inject custom columns or panels into File Explorer may behave erratically if they haven’t been updated for the new asynchronous thumbnail and icon handling. Developers need to align with the IUIFramework3 API to maintain compatibility.
  • Folder customizations reset: An edge case exists where folders deeply nested within OneDrive might lose their “Optimize this folder for…” template setting after the update. The workaround is to reapply the desired template via Properties > Customize.
  • Mixed reality headsets: Early Windows Mixed Reality users, particularly on HP Reverb G2, report that File Explorer windows opened in WMR’s desktop view flicker briefly after KB5095093 installs. Microsoft is investigating; a fix is targeted for the July Patch Tuesday.

Standard advice applies: this is a preview, not a security update. Roll it out on a secondary device or in a dedicated test ring before deploying broadly.

The Bigger Picture: File Explorer’s Ongoing Evolution

KB5095093 isn’t an isolated gesture. Since the divisive Windows 11 launch, Microsoft has been methodically chipping away at File Explorer’s rough edges. The 23H2 update introduced tabs; 24H2 brought a modernized address bar and context menu refinements. KB5095093’s focus on the Details pane and cloud integration signals that the team is now turning its attention to the less glamorous but equally crucial info-management layer of the shell.

This gradual, iterative approach mirrors how the Office team tightened PDF handling and collaboration features over successive monthly updates. It suggests that Microsoft views File Explorer not as a monolithic product but as a living interface that can absorb feedback in near-real-time. The company’s decision to decouple the shell from core OS updates via the Windows Feature Experience Pack framework means fixes like these will likely reach users faster than ever.

Yet, some in the community argue that these tweaks merely patch a fundamentally outdated design. Rival file managers like Files App (a third-party UWP-based Explorer alternative) already offer more advanced column-based layouts and plugin ecosystems. Microsoft’s challenge is balancing modernization with the backward compatibility that defines Windows. KB5095093 walks that line carefully, enhancing established components rather than overhauling them.

Community Pulse and Verdict

While the original discussion thread lacks live commentary, historical patterns suggest users will greet the OneDrive fix with palpable relief. On forums like Windows Central and Reddit’s r/Windows11, threads complaining about sync icon inconsistencies routinely amass hundreds of upvotes. The quicker Details pane and cloud thumbnail reliability, though less vocalized, address frustrations that have simmered since the 24H2 rollout.

If Microsoft’s telemetry aligns with this release’s quality, we can expect KB5095093’s fixes to be bundled into July’s mandatory Patch Tuesday update, making these improvements broadly available. Until then, adventurous Windows 11 users on 24H2 and 25H2 have a compelling reason to hit “Check for updates.”

In a year dominated by AI twists and Copilot integrations, KB5095093 is a palate-cleanser—an update that simply makes the operating system’s most-used application a little faster, a little smarter, and a lot less annoying. For power users who spend hours navigated nested folders, that’s a headline worth reading.