Microsoft’s latest update on Tuesday broke some VMs, but there’s a fix

Microsoft released an emergency fix for its latest Patch Tuesday update that prevented some users from creating new virtual machines on certain Hyper-V hosts.

The problem that affected users of Windows Server 2019 and Windows Server 2022 was due to KB5021249 (opens in a new tab) or KB5021237 (opens in a new tab) updates installed on Windows Server or Azure Stack HCI hosts.

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