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54 lines
3.8 KiB
Markdown
54 lines
3.8 KiB
Markdown
---
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title: "PSA: Microsoft's KB5022842 breaks Windows Server 2022 VMs with Secure Boot" # Title of the blog post.
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date: 2023-02-17T12:24:48-06:00 # Date of post creation.
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lastmod: 2023-02-21
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description: "Quick warning about a problematic patch from Microsoft, and a PowerCLI script to expose the potential impact in your vSphere environment." # Description used for search engine.
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featured: false # Sets if post is a featured post, making appear on the home page side bar.
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draft: false # Sets whether to render this page. Draft of true will not be rendered.
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toc: true # Controls if a table of contents should be generated for first-level links automatically.
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usePageBundles: true
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# menu: main
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# featureImage: "file.png" # Sets featured image on blog post.
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# featureImageAlt: 'Description of image' # Alternative text for featured image.
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# featureImageCap: 'This is the featured image.' # Caption (optional).
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# thumbnail: "thumbnail.png" # Sets thumbnail image appearing inside card on homepage.
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# shareImage: "share.png" # Designate a separate image for social media sharing.
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codeLineNumbers: false # Override global value for showing of line numbers within code block.
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series: Tips # Projects, Code, vRA8, K8s on vSphere
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tags:
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- vmware
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- powershell
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- windows
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- powercli
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comment: true # Disable comment if false.
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---
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{{% notice note "Fix available" %}}
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VMware has released a fix for this problem in the form of [ESXi 7.0 Update 3k](https://docs.vmware.com/en/VMware-vSphere/7.0/rn/vsphere-esxi-70u3k-release-notes.html#resolvedissues):
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> If you already face the issue, after patching the host to ESXi 7.0 Update 3k, just power on the affected Windows Server 2022 VMs. After you patch a host to ESXi 7.0 Update 3k, you can migrate a running Windows Server 2022 VM from a host of version earlier than ESXi 7.0 Update 3k, install KB5022842, and the VM boots properly without any additional steps required.
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{{% /notice %}}
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Microsoft released [a patch](https://msrc.microsoft.com/update-guide/releaseNote/2023-Feb) this week for Windows Server 2022 that might cause some [big problems](https://support.microsoft.com/en-gb/topic/february-14-2023-kb5022842-os-build-20348-1547-be155955-29f7-47c4-855c-34bd43895940#known-issues-in-this-update:~:text=Known%20issues%20in%20this%20update) in VMware environments. Per [VMware's KB90947](https://kb.vmware.com/s/article/90947):
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> After installing Windows Server 2022 update KB5022842 (OS Build 20348.1547), guest OS can not boot up when virtual machine(s) configured with secure boot enabled running on vSphere ESXi 6.7 U2/U3 or vSphere ESXi 7.0.x.
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>
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> Currently there is no resolution for virtual machines running on vSphere ESXi 6.7 U2/U3 and vSphere ESXi 7.0.x. However the issue doesn't exist with virtual machines running on vSphere ESXi 8.0.x.
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So yeah. That's, uh, *not great.*
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If you've got any **Windows Server 2022** VMs with **[Secure Boot](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.security.doc/GUID-898217D4-689D-4EB5-866C-888353FE241C.html)** enabled on **ESXi 6.7/7.x**, you'll want to make sure they *do not* get **KB5022842** until this problem is resolved.
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I put together a quick PowerCLI query to help identify impacted VMs in my environment:
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```powershell
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# torchlight! {"lineNumbers": true}
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$secureBoot2022VMs = foreach($datacenter in (Get-Datacenter)) {
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$datacenter | Get-VM |
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Where-Object {$_.Guest.OsFullName -Match 'Microsoft Windows Server 2022' -And $_.ExtensionData.Config.BootOptions.EfiSecureBootEnabled} |
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Select-Object @{N="Datacenter";E={$datacenter.Name}},
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Name,
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@{N="Running OS";E={$_.Guest.OsFullName}},
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@{N="Secure Boot";E={$_.ExtensionData.Config.BootOptions.EfiSecureBootEnabled}},
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PowerState
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}
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$secureBoot2022VMs | Export-Csv -NoTypeInformation -Path ./secureBoot2022VMs.csv
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```
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Be careful out there!
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