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Knowledge Base

Windows 10 v1903/19H1 and Windows Server 2019 v1903/19H1 will hang or BSOD during power-on when vIOMMU is enabled (68043)

Last Updated: 4/29/2021Categories: InformationalTotal Views: 24886Language:
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Symptoms

During installation or in-place upgrade to v1903/19H1 releases of Windows 10 or Windows Server 2019, the guest will hang (at the windows Logo screen) or BSOD.

Cause

This is a known issue in v1903/19H1 of both Windows 10 and Windows Server 2019 that first appeared in build 18362. VMware is collaborating with Microsoft on a fix and Microsoft has published KB4497935 to resolve this issue

Customers who meet all of the following criteria are affected:

Using VMware Cloud on AWS, Sphere 6.7 or later

VM is on hardware version 14 or later

VM is enabled with vIOMMU or "Virtualization Based Security" (VBS), regardless if VBS is enabled in Windows

Customer is attempting to install or perform in-place upgrade to v1903/19HA releases of Windows 10 or Windows Server 2019

If you are affected, we recommend delaying adoption of v1903/19H1 until after patch is available from Microsoft.

Resolution

To avoid this issue, power-off VM and deselect option "Virtualization Based Security" (VBS) and disable the vIOMMU in vSphere VM editor. These options are only available on vSphere 6.7 or later and VMs with hardware version 14 or later.

To deselect the option "Virtualization Based Security" (VBS) and disable the vIOMMU:

Ensure that the virtual machine is shutdown and is powered off.

Right-click on the virtual machine.

Click Edit Settings... to open the Virtual Machine Properties window.

Click the VM Options tab.

Click on VMware Tools

Uncheck Virtualization Based Security

Click OK

Workaround

To workaround this issue, apply windows update KB4497935 to OS build 18362.145. Or use Microsoft new updated ISO image of Windows 10 v1903 or Windows Server, v1903(OS build number 18362.295) on Visual Studio on Aug 2019, which contain the fix of this issue.

If you do not want to apply this update, the following optional workaround steps would allow use of VBS. However, performing an update to Windows OS after enabling VBS may cause this issue to reoccur.

Apply above Resolution on powered-off VM.

Fully install or upgrade guest os without enabling VBS in vSphere

Power off VM, enable "Expose hardware assisted virtualization to guest" by:

Right-click VM

Edit Settings

Under Virtual Hardware, expand CPU section

Check the box for "Expose hardware assisted virtualization to the guest OS"

Power on VM, in the Microsoft guest OS, enable "Hyper-V" feature either PowerCLI or Command line (defer to Microsoft for additional options), then reboot guest OS

Power off VM, then enable VBS for the VM in vSphere.

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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Download and Install VMware Fusion (2014097)

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在聚合失败后，在 Platform Services Controller 中重新创建 vCenter Server 计算机帐户 (68132)

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