Microsoft has posted an online bulletin confirming that the company is investigating reports that state Windows 11's latest security update has rendered some PCs unbootable.

Round and round we go.

In confirmed cases, Windows 11 boot failure occurs post-update, with the machine stuck at a black screen and unable to ...

In a surprising turn of events, Microsoft has confirmed that its January 2026 security update, KB5074109, is causing significant boot issues for some Windows 11 users. This latest development ...

Microsoft has had to issue two out-of-band updates to fix its buggy Windows 11 patch.

The most recent January Windows Update is broken on a number of PCs, but at least virtual machines don't seem to be impacted.

Microsoft issues second emergency patch for Windows this month - update your PC today ...

Last week, Microsoft released a very important Defender update for new Windows 11 and 10 ISO image installations that deals with the widespread Lamma stealer. The security update was published right ...

Microsoft’s fifth major iteration of Windows 11 is nearing its release to the general public—the Windows Insider team announced today that Windows 11 25H2 was being put into its Release Preview ...

Steven Musil is a senior news editor at CNET News. He's been hooked on tech since learning BASIC in the late '70s. When not cleaning up after his daughter and son, Steven can be found pedaling around ...