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Grab your coffee mug and brace for mild excitement: Microsoft’s latest Windows 10, version 22H2 non-security preview update—KB5055612, OS Build 19045.5796—has landed. If you’re still clinging to Windows 10 like a well-worn hoodie, this is the sort of update you’ll keep seeing, right up until support does its dramatic walk-off in October 2025. Consider this your curated tour through Microsoft’s “quality improvements” labyrinth, plus a hearty dose of real-world insight, light snark, and a sprinkle of what-the-IT moments, because let’s be honest—everyone needs entertainment with their patch notes.

A computer monitor on a desk displays a Windows screen with a coffee mug nearby.
Support Is Going, Going… Gone! (Well, Almost)​

Let’s not tiptoe around it: Windows 10 is marching steadily toward the big software retirement home. Microsoft has set October 14, 2025, as its final “thanks for everything” update, after which your PC will keep soldiering on—just without that warm, reassuring embrace of security fixes, handy updates, or even a sympathetic customer service rep. It's the software equivalent of being forced to finally move out of your parents' house.
If you’re a sysadmin or the household’s “IT Person By Default,” take heed: sticking with Windows 10 after that deadline will feel less like nostalgia and more like playing dodgeball in a hornet’s nest. Enjoy these updates now, because they’re counting down.

April 2025 Non-Security Update: A Preview Worth Your Attention?​

Right, on to the content of this preview update. This isn’t one of those jazz-hands, headline-grabbing feature releases. No, KB5055612 takes the quiet achiever approach—think more like an accountant with a dry sense of humor than a party planner.
What’s on offer? Quality improvements, tweaks under the hood, and the sort of changes that get IT professionals excited (or, at the very least, slightly less disillusioned).

Security Improvements (Wait, Isn’t This a Non-Security Update?)​

Despite its “non-security” label, the update quietly squeezes in “miscellaneous security improvements to internal Windows OS functionality.” Microsoft's wording is intentionally vague—implying fixes, maybe shoring up a few digital sandbags—but not so bold as to promise any high-visibility heroics.
Take this as evidence that “non-security” in Redmond-speak is a flexible concept. Security improvements are like onions in a stew: you might not see them, but you’ll notice their absence when things go awry.

GPU Paravirtualization Fix in WSL2: The Case of the Sensitive Check​

Now here’s a fix that only hardcore admins get excited about: GPU paravirtualization in Windows Subsystem for Linux 2 (WSL2) had a minor hiccup, where the check for this feature was case-sensitive. In human terms, your system could overlook perfectly good GPU features, all because someone at Microsoft cared about capital letters a little too much.
It’s the sort of nitpick that, if left unsolved, would leave a handful of data scientists staring forlornly at error messages, wondering if the new intern sabotaged their stack.
For everyday users, this tweak will be so invisible it’s practically quantum. But for those leveraging WSL2 for development with GPU offload—breathe a small sigh of relief.

Windows Kernel Vulnerable Driver Blocklist: BYOD (Bring Your Own Disaster)​

A standout “security-ish” highlight: expanding the blocklist for the infamous Windows Kernel Vulnerable Driver (DriverSiPolicy.p7b). As the Bring Your Own Vulnerable Driver (BYOVD) trend keeps security specialists up at night, this update adds to the blacklist, aiming to neuter common exploits used in real-world attacks.
For IT pros, this is a polite tap on the shoulder to make sure all drivers are current, legitimate, and, if possible, not sourced from a suspicious corner of the Internet. If you’re a BYOVD fan (and let’s hope you’re not), your days are now numbered—at least on systems with this update. It’s the digital equivalent of locking up the liquor cabinet before the teenagers come over.

Servicing Stack Update Combo: Less Hassle, More Muscle​

KB5055612 quietly arrives with a servicing stack update (SSU KB5055663, build 19045.5789), because Microsoft wants your update process to be as pain-free as possible. If you’ve been around the patch block, you know that servicing stacks are the unsung heroes—they ensure future fixes actually install, repair what little can be repaired in Windows Update itself, and, critically, try to prevent your PC from descending into “undoing changes” hell.
Now, SSUs are served up with your cumulative updates, saving admins yet another post-it note on their monitors. The combined pack means fewer hoops for everyone—let’s call it a rare win for efficiency.
And if you’re still updating offline images or deploying via WSUS, do mind the footnotes. For some edge cases (if your base image is old enough to vote), you’ll have to pre-wire a standalone SSU from late 2023 or mid-2021. Because, naturally, Windows patching has never been allowed to be truly simple.

Known Issues: Because No Update Is Ever “Issue-Free”​

Microsoft would be remiss not to include a section on known issues, the horcruxes of every update release. This update is no exception, and there’s always a little something to keep intrepid admins on their toes (and possibly cursing quietly in the server room).

Citrix Session Recording Agent: When Updates and Virtualization Collide​

First on the chopping block: devices running certain Citrix components—specifically, Citrix Session Recording Agent (SRA) version 2411 from December 2024—may balk at completing the January 2025 security update installation. Instead, users are greeted with one of those cheerfully misleading messages, “Something didn’t go as planned. No need to worry—undoing changes,” followed by the digital walk of shame back to the pre-update state.
The silver lining? Home users, unless you’re running Citrix for family dinners, are off the hook. For enterprise shops, especially those keeping Citrix fresh, it’s a not-so-subtle push to monitor both Citrix and Windows release notes in lockstep.

System Guard Runtime Monitor Broker: Mysterious, Harmless, but Annoying​

For the error hawks poring over Windows Event Viewer logs, this update presents a new Easter egg: Event 7023 pointing to “SgrmBroker.exe,” the System Guard Runtime Monitor Broker service, announcing its “termination with error: %%3489660935”.
Let’s translate: Microsoft Defender used to rely on this service, but it’s been left behind, a relic of security ambitions past. The process is now largely vestigial—harmless, inert, and destined for the digital attic. The error is silent, does not affect your actual security, and, in truth, can be ignored. But if you’re chasing a “clean” event log, Microsoft offers steps to disable the culprit by running a pair of cryptic commands that look suspiciously like ancient wizard spells.
Pragmatically, this is a classic case of “it’s not broken, but let’s stop the logs from looking like it is.” For most orgs, it’s low priority—unless your compliance auditor enjoys squinting at every event code in your infra.

Update Deployment: Channels and Gotchas​

Whether you’re patching a single laptop or rolling updates across a multi-national fleet, Microsoft offers a painstakingly precise menu of update paths, each with their own quirks.
  • Windows Update: Go to Settings > Update & Security, hunt for “Optional updates available,” download and install. As always, look for that optional checkbox—the only thing more hidden than the meaning of life.
  • Windows Update for Business: No action! These get rolled into the next security update.
  • Update Catalog: For the old-school or the certifiably paranoid, grab the standalone package directly.
  • WSUS: Import manually after ritual dances to appease the catalog interface.
Want to uninstall? Unless you’re a time traveler, tough luck. Because the SSU is now inseparable from the LCU, “uninstalling” means using DISM with a precise package name. The usual wusa.exe /uninstall incantation won’t work now—you can’t unmix this Kool-Aid.

Hidden Risks, Subtle Strengths, and Real-World Fallout​

Let’s now unglue ourselves from the official script and peer beneath the glossy update surface.

The Elevator To Windows 11​

Every new Windows 10 update is a softly-whispered hint that your next OS migration should be on the calendar (if not in progress). Post-October 2025, sticking with Windows 10 will be as responsible as using your personal password as “password1”. Not only are you exposed to theoretical risks, but attackers stockpiling exploits for unsupported versions are, frankly, delighted.
And let’s not ignore the hardware paradox: countless perfectly functional machines will be forced into obsolescence, unless users are ready for registry hacks, unofficial ISOs, or simply accept their fate as “legacy systems.”

SSU+LCU Marriages: Less Pain, But No Divorce​

This combined servicing stack/cumulative update approach simplifies life for most, but it also means reversibility is sacrificed for stability. In an enterprise world where “rollback” can be a matter of regulatory or operational necessity, admins will need to strategize and test even more thoroughly in lab environments before pushing new builds live. There's a certain poetry to an update you can’t easily escape—a digital marriage that can’t be annulled with a click.

BYOVD and You: Endpoint Security Still Not Foolproof​

Expanding the driver blocklist is absolutely necessary, but it underscores a deeper truth: endpoint security is a moving target. Relying solely on Microsoft’s patching cadence ignores the wild west of unvetted drivers, unsigned binaries, and hastily-downloaded utilities. It’s another silent reminder for IT departments to maintain rigorous allow-listing and endpoint monitoring, even as Microsoft sharpens its policy files.

The Citrix Syndrome: Layer Cake Troubles​

That Citrix SRA issue is a flag for any organization with a tangled web of third-party agents, virtualization, and layered dependencies. Each update cycle becomes its own mini-change management project, with a growing list of caveats and potential regression points. The lesson? Change control and rigorous pilot testing aren't optional—they're mission-critical.
And for everyday users glued to their virtual desktops: if your session recordings vanish, don’t blame Dave from IT. Blame progress.

File Lists: Nerdy, Necessary, and Actually Useful​

If you’re the sort who opens CSVs “to see what’s new,” Microsoft provides full file manifests for this update pair. They may look like spreadsheet soup to most mortals, but they’re a lifeline for anyone managing baseline images, compliance audits, or simply verifying that nothing unexpected tagged along for the ride.
In 2025, “trust but verify” involves opening Excel as often as opening Windows Settings. The future may be automated, but the paperwork (digital or otherwise) has never been more intricate.

Real-World Takeaways: Should You Care? (Yes, But…)​

If you’re still running Windows 10, every update matters just a little more as the clock ticks down. While KB5055612 may not introduce dazzling new features, its cumulative quality improvements, strengthened security policies, and subtle process tweaks all serve as the slow, patient march toward an inevitable upgrade deadline.
For IT pros, every new update is a balance between “let’s get compliant” and “let’s not break everything.” The known issues section has become more essential than ever, demanding a careful scan for conflicts with legacy software, third-party agents, and virtualization layers.
If you’re a home user…let’s be honest, you’re probably only here because something failed, or Windows Update pinged you at the worst possible time. Meditate on the importance of up-to-date security, then ignore this update until you’re forced to restart while making toast.

In Closing: The Slow Fade-Out of Windows 10​

Windows 10’s final year is shaping up the way most long-running sitcoms do—quiet, familiar, with the occasional plot twist to keep everyone awake. KB5055612 is a model of subtlety—no pageantry, just a carefully tended garden of fixes and under-the-hood tweaks.
If you take one thing from this update, let it be this: transition plans should be real, not hypothetical. Migrate while you still have the luxury of choice, not necessity. And as you click through one more cumulative update, raise your mug to an operating system that, for better or worse, still refuses to go gentle into that good night.
But do keep those backups handy. Just in case.

Source: Unknown Source April 22, 2025—KB5055612 (OS Build 19045.5796) Preview - Microsoft Support
 

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