Microsoft’s first Windows 11 update of 2026 was a mess

Microsoft’s first update to Windows 11 in 2026 was a mess, to say the least. After reports of shutdown issues on some devices, Microsoft has issued a warning Emergency update To fix the Windows 11 January 2026 Update last weekend. Now, exactly a week later, the software maker has been forced to release an unusual second version The repair is out of scope To address OneDrive and Dropbox crashes.

Microsoft is too Investigation Reports of boot failures that may be related to the January 2026 security update.

While the first shutdown bug was limited to devices running Enterprise and IoT versions of Windows 11 version 23H2, the latest out-of-band update fixes crashes and unresponsiveness in OneDrive and Dropbox on the latest Windows 11 builds 24H2 and 25H2.

Just like the first emergency patch to fix the problematic January 2026 Update, the second update was released out of scope over the weekend, leaving IT administrators with a busy Monday morning. There may be more problems ahead for IT administrators as well.

Microsoft warned over the weekend that the January 2026 Update may also lead to boot failure on some devices. in He warns For IT administrators, the company said it is investigating reports of boot failures with 24H2 and 25H2 after installing the January 2026 Update. Some computers were shown a blue screen with an UNMOUNTABLE_BOOT_VOLUME stop code, and Microsoft warns that these devices must be recovered manually.

Microsoft has not completed its investigation into the boot failure, so it’s not clear if this update is definitely the cause of the problem. A similar security update last year was initially blamed for SSD issues, but it was actually the root cause Early versions of the motherboard’s firmware and BIOS.