Windows 11’s Faster File Deletion Follows a Year of Quick Fixes

Microsoft is testing a Windows 11 fix that could cut bulk file deletion time by at least 30%. The company shared the figure with Windows Insiders at a meetup, not in a blog post, and Windows Latest says an attendee relayed it afterward.

It lands eight months into a rockier stretch of File Explorer fixes, one Microsoft itself admits made the app feel slower than its predecessor. One piece of that repair already shipped this June. The bulk-delete number has not, and it hasn’t touched a single Insider build yet.

Microsoft Puts a Number on File Explorer’s Oldest Complaint

Windows Latest broke the story on June 9, reporting that Microsoft shared the figure at a Windows Insider meetup in the United States. Thirty percent, the outlet said, is a floor rather than a ceiling; some machines could see the deletion time drop even further.

Microsoft has not published a formal blog post confirming the number. What the company has confirmed, in a statement Windows Latest quoted, is the shape of its plan. The first phase would focus on “a quicker launch experience, reduced flicker, smoother navigation” and steadier everyday file handling, Microsoft said.

That first phase reaches past the visible window. Microsoft is also testing a redesigned right-click menu built to load faster and let users choose which entries appear, alongside work to shrink File Explorer’s memory footprint and modernize its decades-old Properties dialog. Microsoft has also been reworking Windows Search in parallel, including a fix that lets two-character searches actually return matches, a change moving through the same family of Insider builds.

The company has told Windows Latest it is planning as many as 19 feature updates for Windows 11 this year, of which the File Explorer work is only one thread.

The Filesystem Bill Behind Every Delete

Deleting one file is instant. Deleting ten thousand is a different operation entirely, and the gap between them is where the 30% target lives.

Windows 11 tracks far more about a file than its name and location. NTFS (New Technology File System, the format Windows uses to organize data on most internal drives) keeps records tied to permissions, search indexes, thumbnails and metadata, and all of it needs updating the moment a file disappears.

• NTFS entries – the internal record marking where a file physically lived gets removed or rewritten.
• Permissions – the access rights attached to that file are cleared along with it.
• Indexes and thumbnails – search indexes and cached preview images tied to the file get updated.
• Metadata – tags, timestamps and other properties are wiped from the system’s records.

Storage hardware still sets a ceiling. A drive with fast random input and output handles a folder of thousands of small files far better than an older mechanical disk, no matter how much Microsoft trims on the software side. The fix targets the overhead sitting on top of whatever the hardware can already do.

The Preloading Backlash Forced Microsoft to Explain Itself

The bulk-delete number doesn’t arrive in a vacuum. It follows Microsoft’s first attempt at fixing File Explorer speed: a preloading feature tested toward the end of 2025 that kept parts of the app resident in memory so it would open faster on the first click.

The fix worked at its narrow goal. But preloading doubled File Explorer’s RAM usage without fixing the sluggishness users hit once the window was actually open: folder navigation, thumbnail loading, right-click menus. The added memory cost was small in absolute terms but became a symbol of Microsoft patching around a problem instead of inside it.

TechRadar’s take on the backlash was blunt about the split. Much of the complaining was overblown, since the fix delivered exactly the startup speed it promised, but the outlet argued the deeper point stood, writing that “we get a quicker fudge rather than a proper fix.”

Tali Roth, Microsoft’s head of product for the Windows Shell team, addressed the criticism directly. Writing on X in May, she pushed back on the idea that preloading and deeper code fixes were competing approaches.

As with many things, the answer is an AND.

Roth said her team views startup performance holistically. In the same post, she said her team is pursuing targeted fixes to load order, disk reads and app hangs at the same time as preloading, not instead of it.

KB5095093 Breaks the Preloading Habit

Proof arrived in late June. Microsoft shipped Windows 11 update KB5095093, covering builds 26200.8737 and 26100.8737, as an optional preview, and for the first time the launch-speed fix inside it did not lean on preloading at all.

The update reworks File Explorer’s Home tab, the view that loads by default and constantly pulls in pinned folders, cloud storage status and recent files. That tab, rather than the app itself, had been the real bottleneck. Microsoft’s own release notes describe the change simply: “Improves the speed and performance of File Explorer launch.”

TweakTown reported that the underlying WinUI 3 rewrite behind this work cut memory allocations by 41% and shaved 25% off launch-time code execution, figures it attributed to months of incremental work by the Windows Shell team rather than to KB5095093 alone.

Smaller fixes rode along in the same package: more reliable disk-image mounting, backslash and quotation-mark support in the address bar, and a repair for a Background Intelligent Transfer Service bug that had been delaying shutdowns by several seconds. A related responsiveness feature, the Low Latency Profile that debuted in KB5089573, expanded to more PCs in the same update wave, shortening the CPU bursts that speed up the Start menu and search.

Windows Latest confirmed that testers no longer need to join the Insider Program to get the faster launch fix; the optional update is open to anyone willing to install it manually. What began as an optional preview in June becomes part of the mandatory patch in July, reaching every Windows 11 PC on that update whether or not the user ever opted in.

The pattern across all three rows is the same: Microsoft ships the visible fix first and explains the deeper one later, if at all.

The 30% Figure Still Hasn’t Reached a Single Build

Everything in that table’s third row remains a promise. The deletion speedup is expected to reach Windows Insiders in the coming weeks, with a wider release to follow in a future cumulative update. No build number has been attached to it yet.

TechPowerUp’s account of KB5095093’s move from optional preview to mandatory patch offers the closest template available. If bulk delete follows a similar arc once it reaches testers, a broad rollout later in 2026 is plausible, though Microsoft has committed to nothing publicly.

Microsoft is treating deletion as the test case: the operation most likely to expose whether the fix holds up once thousands of real Insider machines, each with its own drive, antivirus software and OneDrive sync state, start running it instead of one machine in a conference room.

Why Is Microsoft Racing SteamOS Over a File Manager?

Because File Explorer is the one Windows 11 surface nearly every user touches daily, and Microsoft has reportedly been benchmarking its own shell against SteamOS as gamers migrate to Linux-based alternatives. That comparison sits inside Project K2, the internal initiative that has already delivered a movable taskbar and a reworked Start menu section.

Search, navigation and the right-click menu have each been through multiple rounds of criticism and rework since Windows 11 launched. Windows Latest has also reported Microsoft testing a toggle that would strip Bing and Microsoft Store results from Search, a separate concession to users who found the shell doing more than they asked it to.

For IT departments, the calculus is simpler than brand loyalty. Fewer complaints about a sluggish file manager mean fewer help-desk tickets, and fewer reasons for power users to install third-party replacements Microsoft cannot patch or secure. A file manager that feels immediate in its most repetitive task builds trust that a keynote demo never will.

Frequently Asked Questions

Do I Need the Windows Insider Program to Get a Faster File Explorer?

Not for the launch-speed fix. KB5095093’s Home tab rework is available as a manual, optional download for anyone running Windows 11 24H2 or 25H2, no Insider Program enrollment required. The bulk-delete speedup is different: as of this writing it exists only in the plan Microsoft described at its Insider meetup and hasn’t reached any public build, Insider or otherwise.

Will Copying and Moving Files Get Faster Too?

Yes, according to Microsoft’s own statement relayed by Windows Latest, copying and transferring files are expected to see similar engine-level optimizations. Neither operation has been given a percentage target the way bulk deletion has, and no timeline beyond “future updates” has been attached to them.

Does This Get Rid of File Explorer’s Memory-Hungry Preloading?

No. Preloading remains a separate, toggleable feature under Folder Options in File Explorer’s View settings, and Microsoft hasn’t withdrawn it. The company has framed preloading and the newer code-level fixes as complementary, running side by side rather than one replacing the other.

What Hardware Matters Most for Faster Bulk Deletes?

Storage type is the biggest variable outside of Windows itself. Solid-state drives with fast random input and output handle large batches of small files far better than mechanical hard drives or older SSDs. That’s also why Microsoft has called 30% a baseline rather than a guarantee: newer NVMe drives are likely to see a bigger jump than older SATA drives.

When Will General Windows 11 Users See the 30% Speedup?

No public date has been set. KB5095093 moved from an optional June update to a mandatory July patch in about four weeks, and if bulk delete follows a similar path once it reaches Insiders, a broad rollout later in 2026 is plausible, though Microsoft has not confirmed a schedule.