Windows 11 has a slow NVMe SSD problem — here’s how to fix it

Microsoft Windows 11 running on an Apple MacBook laptop.
(Image credit: Shutterstock)

Windows 11 has had a number of issues since it launched in October. One of the most frustrating was how Microsoft’s latest operating impacted the performance of some types of NVMe solid-state drives. If you’ve upgraded to Windows 11 and have seen reduced performance, you aren’t alone.

Microsoft promised to release a patch to remedy the issue, and now it has made good on that claim with Patch KB5007262, released on November 22 via the Windows Insider program. Once downloaded and installed, it should boost your device’s performance. However, you’ll need to manually install the update since it isn’t going out as part of an automatic Windows update.

The steps aren’t overly complicated (via Tech Advisor). To install patch KB5007262, open Settings and select Windows Update from the left pane, then click Check for updates. If the patch is available, wait for it to automatically download and install. Afterward, restart your device to apply the changes. If patch KB5007262 doesn’t appear in Settings, you can instead download it from the official Microsoft Update Catalog. Be sure to choose the x64 version unless your device has an ARM-based processor.

What’s interesting about this particular problem is how greatly it affected SSD write speeds. A post in Microsoft’s forums from October showed benchmarks performed in CrystalDiskMark. Results showed a reduction in random write speeds that approached 50 percent when comparing Windows 11 and Windows 10 (via Beta News). Redditors and other users on Microsoft's forums also posted similar complaints about Windows 11 reducing SSD performance speeds.

There are always going to be problems with new operating systems. As frustrating as this particular issue is (and it’s a doozy), it isn’t wholly surprising. It’s good that Microsoft was as quick to remedy this problem, as it was when similar performance issues plagued machines with AMD Ryzen CPUs.

If you’re interested to see what else was fixed in the KB5007262 update, you can read the full release notes on Microsoft’s website. If Windows 11 is still running slow for you, be sure to check out our guide on how to speed up Windows 11.

TOPICS
Tony Polanco
Senior Computing Writer

Tony is a computing writer at Tom’s Guide covering laptops, tablets, Windows, and iOS. During his off-hours, Tony enjoys reading comic books, playing video games, reading speculative fiction novels, and spending too much time on X/Twitter. His non-nerdy pursuits involve attending Hard Rock/Heavy Metal concerts and going to NYC bars with friends and colleagues. His work has appeared in publications such as Laptop Mag, PC Mag, and various independent gaming sites.

Read more
laptop anger
Latest Windows 11 update reportedly breaking major parts of the operating system
Windows 11 logo on a laptop screen
I reviewed Windows 11, and these are the 5 new features I'm most excited about for 2025
Man typing on Windows 11 laptop
Microsoft confirms major Windows 11 and Windows 10 audio bug is cutting sound on PCs
A laptop on a windowsill in the middle of a Windows update
Microsoft is ending support for Windows 10 soon — 5 ways to make sure your PC is secure
New Windows Search feature example on Windows 11
Microsoft is bringing big upgrades to Windows Search for Copilot+ PCs — here's what we know
Windows
240 million Windows 10 users are vulnerable to six different hacker exploits — protect yourself now
Latest in Windows Operating Systems
Microsoft Office is finally as it should have been on iPad
Microsoft tests free Word, PowerPoint and Excel apps for Windows — expect a lot of ads
laptop anger
Latest Windows 11 update reportedly breaking major parts of the operating system
Windows 10 logo
Windows 10 end of life set for this year — everything you need to know to get ready
Windows 11 logo on a laptop screen
I reviewed Windows 11, and these are the 5 new features I'm most excited about for 2025
A Windows 11 laptop, demonstrating how to run Android apps on Windows 11
How to remove the Windows 11 news and weather widget
Man typing on Windows 11 laptop
Microsoft confirms major Windows 11 and Windows 10 audio bug is cutting sound on PCs
Latest in News
Rendered images of rumored foldable iPhone.
Foldable iPhone report just revealed key details — here's what we know
Nintendo Switch 2
Nintendo Switch 2 rumored specs — here’s what we know so far
iPhone 17 Pro render
iPhone 17 Pro — 7 biggest rumored upgrades
CAD renderings of the Google Pixel 10 Pro XL
Pixel 10 leak could be good news for all Android phones
A magnifying glass on top of the Steam logo in a web browser
Valve just pulled a malicious game demo spreading info-stealing malware from Steam
Lewis Hamilton of Great Britain and Scuderia Ferrari looks on during Sprint Qualifying ahead of the F1 Grand Prix of China at Shanghai International Circuit in Shanghai, China, on March 21, 2025. (Photo by Song Haiyuan/Paddocker/NurPhoto via Getty Images)
How to watch Chinese Grand Prix 2025 online – stream F1 without cable, qualifying highlights