Security News

​Microsoft has fixed several bugs that cause install, upgrade, and Blue Screen of Death (BSOD) issues on Windows Server 2025 devices with a high core count. [...]

​Microsoft has confirmed several bugs causing install and Blue Screen of Death (BSOD) issues impacting Windows Server 2025 systems with more than 256 logical processors. [...]

​Microsoft warns that some Windows 11 systems enter reboot loops or might freeze with blue screens after installing the September 2024 KB5043145 preview update. [...]

Something likely to be absent from Microsoft's Ignite event is talk of a fix rolled out to deal with malfunctioning Windows Server 2022 Virtual Machines following a problematic update from the company. The culprit was the KB5031364 October update, which contained a variety of fixes and updates for Windows Server 2022, from changing the spelling of Ukraine's capital from Kiev to Kyiv to addressing issues with the Server Message Block service.

Microsoft says the recent wave of blue screens impacting some Windows users is not caused by issues in its August 2023 optional updates. Microsoft first acknowledged this known issue on Wednesday, saying that affected platforms include Windows 11 22H2 and Windows 10 21H2/22H2.

MSI has officially confirmed the recent surge of blue screens of death encountered by Windows users after installing this week's optional preview updates is linked to some of its motherboard models. "MSI has received several reports of users encountering a Blue Screen of Death that has an error message that reads 'UNSUPPORTED PROCESSOR' with MSI's 600/700 series motherboards after installing the Windows 11 update, KB5029351 Preview," the company said.

Microsoft says the August 2023 preview updates released this week for Windows 11 and Windows 10 systems are causing blue screens with errors mentioning an unsupported processor issue. The updates in question are tagged as KB5029351 and KB5029331, and they come with Search app fixes and introduce a new Backup app, respectively.

Microsoft has addressed a known issue causing Blue Screen of Death crashes with 0xc000021a errors after installing the Windows 10 KB5021233 cumulative update released during the December Patch Tuesday. The issue was fixed in the KB5022282 update issued today for all Windows 10 versions currently under support.

Some users running Windows 10 who installed the KB5021233 cumulative update this month are seeing their operating system crash with the Blue Screen of Death, Microsoft is warning. In an entry over the weekend in its Windows Health Dashboard, the company wrote that the update might cause "a mismatch between the file versions of hidparse.sys in c:/windows/system32 and c:/windows/system32/drivers, which might cause signature validation to fail when cleanup occurs."

Microsoft is investigating a known issue leading to Blue Screen of Death crashes with 0xc000021a errors after installing the Windows 10 KB5021233 cumulative update released during this month's Patch Tuesday. The company warned over the weekend that "After installing KB5021233, some Windows devices might start up to an error with a blue screen."