- Local time
- 8:57 AM
- Posts
- 217
- OS
- Windows 11 Pro build 26200.5651 (Dev)
When I was on Windows 10 Pro 6 years ago, I created an Hyper-V VM (2nd Gen) and installed Windows 10 Pro on it with a separate Product Key for activation.
Then I upgraded this Windows 10 Pro machine to Windows 11 Pro. I also upgraded the VM to Windows 11 Pro with Secure Boot and TPM enabled.
Later I installed another Windows 11 Pro on a new disk drive to dual-boot along with the first Windows 11 Pro.
I wanted to move my activated VM to the new disk drive. I made the move. When I tried to start the VM with Secure Boot and TPM enabled, I got a message, something like,
"An error occurred while attempting to start the virtual machine..... The key protector could not be unwrapped, bla bla bla....."
After several Hyper-V configuration changes in Hyper-V settings, I was able to start the VM only with the TPM disabled.
When I searched over the internet for this problem, I came across @cereberus thread on this forum.
I applied the solution by @cereberus as of May 2023 ( Hyper-V TPM issue with Windows 11 on new device ), I was able to start the VM with TPM enabled.
Upon further research over the internet, I also found an article on Microsoft's TechCommunity written on July 2025 about the same subject, more than two years after @cereberus thread ( Hyper-V Virtual TPMs, Certificates, VM Export and Migration | Microsoft Community Hub ).
My purpose of posting this thread is,
if you create an Hyper-V VM for Windows 11 on a Windows 11 Pro (the host) and move it to another host of Windows 11 Pro, you should first export the relative VM certificates from the first host where you have created the Hyper-V VM and import those certificates to the other host. In case you delete the first host before exporting the certificates, you may not be able to run the Hyper-V VM with TPM enabled.
So when you create an Hyper-V VM on a host, do not forget to export the VM certificates immediately to a folder and keep the folder with the VM backup.
Hope this helps somebody as @cereberus helped me.
Then I upgraded this Windows 10 Pro machine to Windows 11 Pro. I also upgraded the VM to Windows 11 Pro with Secure Boot and TPM enabled.
Later I installed another Windows 11 Pro on a new disk drive to dual-boot along with the first Windows 11 Pro.
I wanted to move my activated VM to the new disk drive. I made the move. When I tried to start the VM with Secure Boot and TPM enabled, I got a message, something like,
"An error occurred while attempting to start the virtual machine..... The key protector could not be unwrapped, bla bla bla....."
After several Hyper-V configuration changes in Hyper-V settings, I was able to start the VM only with the TPM disabled.
When I searched over the internet for this problem, I came across @cereberus thread on this forum.
I applied the solution by @cereberus as of May 2023 ( Hyper-V TPM issue with Windows 11 on new device ), I was able to start the VM with TPM enabled.
Upon further research over the internet, I also found an article on Microsoft's TechCommunity written on July 2025 about the same subject, more than two years after @cereberus thread ( Hyper-V Virtual TPMs, Certificates, VM Export and Migration | Microsoft Community Hub ).
My purpose of posting this thread is,
if you create an Hyper-V VM for Windows 11 on a Windows 11 Pro (the host) and move it to another host of Windows 11 Pro, you should first export the relative VM certificates from the first host where you have created the Hyper-V VM and import those certificates to the other host. In case you delete the first host before exporting the certificates, you may not be able to run the Hyper-V VM with TPM enabled.
So when you create an Hyper-V VM on a host, do not forget to export the VM certificates immediately to a folder and keep the folder with the VM backup.
Hope this helps somebody as @cereberus helped me.
My Computers
System One System Two
-
- OS
- Windows 11 Pro build 26200.5651 (Dev)
- Computer type
- PC/Desktop
- Manufacturer/Model
- Home Built
- CPU
- Intel i7-4790
- Motherboard
- Asus H97 Pro Gamer with add-on TPM1.2 module
- Memory
- Teams DDR3-1600
- Graphics Card(s)
- MSI Nvidia GeForce GTX 1050Ti
- Sound Card
- Realtek ALC1150
- Monitor(s) Displays
- LG Flatron E2250
- Screen Resolution
- 1920 by 1080 pixels
- Hard Drives
- Crucial NVMe PCIe M2 500 GB (Windows 11 v.24H2); Samsung SSD Evo 870 500 GB (Windows 11 v.24H2);
- PSU
- Corsair HX850
- Case
- Gigabyte Solo 210
- Cooling
- Zalman CNPS7X Tower
- Keyboard
- Microsoft AIO Wireless (includes touchpad)
- Mouse
- HP S1000 Plus Wireless
- Internet Speed
- 200 Mb fiber optic
- Browser
- Chrome; MS Edge
- Antivirus
- Windows Defender
-
- Operating System
- MacOS 12 Monterey
- Computer type
- Laptop
- Manufacturer/Model
- Apple Macbook Air
- CPU
- Intel Core i5
- Memory
- 8 GB
- Graphics card(s)
- Intel integrated
- Screen Resolution
- 1440 by 900 pixels
- Hard Drives
- 128 GB
- Keyboard
- Built-in
- Mouse
- Microsoft Wireless
- Internet Speed
- 802.11 ac
- Browser
- Chrome; Safari
- Antivirus
- N/A
