If the BIOS configuration has enabled the SMT function, Microsoft Windows Server will not boot successfully and will be stuck at the Microsoft logo during loading operating system.

Windows Server 2019

Step 1:

The user should reboot to enter the BIOS settings and disable the SMT function.

AMD CBS-> CPU Common Options-> Performance-> CCD/Core/Thread Enablement ->Accept-> SMT control->Disabled

Step 2:

After entering the Microsoft Windows Server 2019, please install Microsoft Hotfix KB4512534 for AMD EPYC X2APIC Patch first.

Step 3:

After updating Microsoft Hotfix KB4512534, please reboot to enter the BIOS settings and enable the SMT function, then Windows can run SMT function.

AMD CBS-> CPU Common Options-> Performance-> CCD/Core/Thread Enablement ->Accept-> SMT control-> Auto

Windows Server 2016

Windows Server 2016 supports AMD EPYC 7xx2-series CPUs, but this O.S. is limited to no more than 255 logical processors. Windows Server 2016 does not support X2APIC mode, and you should disable this mode in BIOS.

AMD CBS-> CPU Common Options-> Performance-> CCD/Core/Thread Enablement ->Accept-> SMT control->Disabled

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Please refer to the following URLs for the Download Center:

Microsoft Windows Server 2019

https://support.microsoft.com/en-us/help/4512534/windows-10-update-kb4512534

Windows Server support and installation instructions for the AMD Rome family of processors

https://support.microsoft.com/en-us/help/4514607/windows-server-support-and-installation-instructions-for-amd-rome-proc

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