Server 2022 boot loops after Hyper-V role installation
After enabling the Hyper-V role on Windows Server 2022 on a Intel NUC6CAYH with Celeron Processor J3455 the unit goes in a bootloop (recovery). This unit previously had Windows Server 2019 installed and before that even Windows Server 2016 and both worked without issues with Hyper-V role installed When using the en-us_windows_server_2022_x64_dvd_620d7eac.iso (RTM release) iso I am able to install Hyper-V role, but when installing any cumulative updates afterwards it goes into this boot loop as described above, only solution is to start in safe mode and the Hyper-V role installation is rolled back. (or in revovery set hypervisorlaunchtype=off) I have found out this seem to be related/similar to be able to enable the Core isolation toggle (which is partly based on virtualization as well) on NUC6CAYH (Apollolake) Steps i tried: 10.0.20348.169 (RTM) (Clean install) Install Hyper-V Role Successful Core isolation toggle Successful 10.0.20348.230 (September ISO) (Clean install) Install Hyper-V Role Unsuccessful Core isolation toggle Unsuccessful ----------------------------------------------------------------------------------------------- 10.0.20348.169 (RTM) (Clean install) Install Hyper-V Role Successful Core isolation toggle Successful 10.0.20348.230 (KB5005575) (Update) We couldn't complete the updates Undoing changes Don't turn off you computer As far as i read the processor meets the minimum requirements, eg: 1,4 GHz 64-bit processor Compatible with x64 instruction set Supports NX and DEP Supports CMPXCHG16b, LAHF/SAHF, and PrefetchW Supports Second Level Address Translation (EPT or NPT) CoreInfo excerpt Intel(R) Celeron(R) CPU J3455 @ 1.50GHz Intel64 Family 6 Model 92 Stepping 9, GenuineIntel Microcode signature: 00000046 VMX * Supports Intel hardware-assisted virtualization X64 * Supports 64-bit mode NX * Supports no-execute page protection CX16 * Supports CMPXCHG16B instruction LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode PREFETCHW * Supports PREFETCHW instruction CoreInfo -V excerpt Intel(R) Celeron(R) CPU J3455 @ 1.50GHz Intel64 Family 6 Model 92 Stepping 9, GenuineIntel Microcode signature: 00000046 VMX * Supports Intel hardware-assisted virtualization EPT * Supports Intel extended page tables (SLAT) Anyone can explain why this works fine on RTM, but won't work after installing any cumulative updates as that makes no sense to me?