It’s 4:45 on a Friday, a filing deadline is twenty minutes out, and File Explorer is thinking about it. Nobody in your firm has time for that half-second where the folder just hasn’t opened yet.
Microsoft is working on exactly that kind of friction in Windows 11 right now, building on changes it announced earlier this year that already touch a firm’s day-to-day, and while it won’t make a slow computer fast, it’s worth knowing what’s actually changing and why it matters more for a firm than for the average home user.
What Microsoft is actually changing
The work centers on WinUI, the framework Microsoft uses to build the visual side of Windows apps, menus, and settings windows. File Explorer runs on it, along with a lot of the built-in tools your staff touch without thinking about it. Speed up WinUI itself, and everything built on top of it benefits without Microsoft having to rework each app individually.
A Microsoft engineer described the effort on GitHub as targeting launch time specifically, using File Explorer and Notepad as the primary benchmarks. On the File Explorer side, the reported gains are 41 percent fewer memory allocations, 63 percent fewer of the short-lived kind, 45 percent fewer function calls, and a 25 percent cut in time spent running WinUI code itself. A separate, related project called Low Latency Profile is aimed at shrinking the gap between clicking something and Windows responding to it.
Why this matters more for a firm than for most users
A slow folder open is an annoyance for a home user. For a firm, it’s time spent not billing, not filing, and not moving a matter forward, multiplied across every paralegal and associate pulling documents out of a case folder all day. It’s also exactly the kind of small, cumulative friction the duty of technological competence is about. ABA Model Rule 1.1, Comment 8, expects lawyers to stay reasonably current on the technology relevant to their practice, and that includes the basic performance of the systems your staff run their work through, not just the software you bill clients for using.
There’s a real caution worth naming, too. Firms are often slower than most businesses to apply Windows updates, and for good reason: a compatibility break with your practice management software, your e-filing tool, or your document management system is a bigger problem for a firm than for most offices. That instinct is reasonable. But this particular round of work is a performance change inside Windows itself, not a change to how third-party software talks to it, so the usual test-on-one-machine-first caution applies here without needing to hold the update back for months.
What to actually do about it
Check that your firm’s update policy isn’t quietly deferring Windows updates past the point of caution and into the point of falling behind — Microsoft has made real changes to how these updates get delivered that make this easier to keep current on than it used to be. Test on a non-critical machine first, same as always, then roll it out. If machines still drag after that, the bottleneck is the hardware, not Windows, and that’s a different conversation.
Either way, the 4:45 filing crunch is exactly the moment this kind of work is supposed to disappear into the background. We can help you figure out whether your fleet is actually getting the benefit of it — that’s part of what managed IT services for law firms actually means in practice.