After January’s Patch Tuesday event, Windows Server administrators complained that the new update was causing serious problems with their servers. These bad issues include Hyper-V not booting, the primary controller going through an endless reboot loop, and ReFS volumes becoming inaccessible and appearing as RAW filesystems.
Following these reports, Microsoft appears to have removed the cumulative update from Windows Update, although they re-released the update with a warning. Now, Microsoft has released out-of-band fixes to these issues:
Out-of-band updates to resolve issues after installing the January Windows Update
Microsoft today (January 17, 2022) released an out-of-band (OOB) update for certain versions of Windows. The update addresses issues related to VPN connections, Windows server domain controller restarts, virtual machine startup failures, and ReFS-formatted removable media failing to mount. All updates are available in the Microsoft Update Catalog, and some are also available as an optional update in Windows Update. Please check the release notes for your version of Windows for more information.
Updates for the following Windows versions are available as optional updates on Windows Update:
- Windows 11, version 21H1 (original release): KB5010795
- Windows Server 2022: KB5010796
- Windows 10, version 21H2: KB5010793
- Windows 10, version 21H1: KB5010793
- Windows 10, version 20H2, Windows Server, version 20H2: KB5010793
- Windows 10, version 20H1, Windows Server, version 20H1: KB5010793
- Windows 10, version 1909, Windows Server, version 1909: KB5010792
- Windows 10, version 1607, Windows Server 2016: KB5010790
- Windows 10, version 1507: KB5010789
- Windows 7 SP1: KB5010798
- Windows Server 2008 SP2: KB5010799
Updates for the following Windows versions are only available on the Microsoft Update Catalog. For instructions, see the KB for your operating system listed below: