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Windows 11 update includes bugfix which enables faster SSD write speeds

Microsoft will finally release a Windows 11 update which fixes slower than usual SSD write speeds (Image: Microsoft)
Microsoft will finally release a Windows 11 update which fixes slower than usual SSD write speeds (Image: Microsoft)
With the upcoming optional KB5007262 update, Microsoft finally fixes a frustrating Windows 11 bug which significantly reduced the random write speeds of both SSDs as well as conventional hard drives.

Microsoft is diligently working on much needed improvements and optimizations for its new operating system Windows 11, which unfortunately still contains numerous bugs and glitches. One particularly annoying bug, which causes slower random write speeds for SSDs and HDDs, has now finally been acknowledged and will be fixed in an upcoming update.

MSPowerUser has previously reported on this frustrating issue in Windows 11, which practically cut the random write speeds of quick PCIe 4.0 NVMe SSDs like the Samsung 980 Pro (from US$74 on Amazon) in half. According to screenshots from an SSD benchmark software, said Samsung 980 Pro is only able to randomly write 900 Mbps in Windows 11, while reaching a much fast 1,600 Mbps in Windows 10. Other users claim that their SSDs slowed down even more after upgrading to Microsoft's new OS.

These fairly wide-spread SSD performance issues are apparently caused by the NTFS USN journal mode, which Windows 11 automatically activates for drives assigned to the letter C. In the official change log for the optional upcoming KB5007262 update, which is still in its preview testing phase, Microsoft finally acknowledges and vows to fix this bug. After downloading and installing the update, Windows 11 users should finally be able to enjoy the full performance of their SSD once again.

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Enrico Frahn
Editor of the original article: Enrico Frahn - Tech Writer - 943 articles published on Notebookcheck since 2021
My fascination for technology goes back a long way to the Pentium II era. Modding, overclocking and treasuring computer hardware has since become an integral part of my life. As a student, I further developed a keen interest in mobile technologies that can make the stressful college life so much easier. After I fell in love with the creation of digital content while working in a marketing position, I now scour the web to bring you the most exciting topics in the world of tech. Outside the office, I’m particularly passionate about motorsports and mountain biking.
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 12 > Windows 11 update includes bugfix which enables faster SSD write speeds
Enrico Frahn, 2021-12-10 (Update: 2021-12-11)