Cove Data Protection Troubleshooting
Restored Hyper-V server fails to boot showing "system_thread_exception_not_handled winhv.sys"
Last Modified
Wed Jun 19 11:52 GMT 2019
Description
- Hyper-V shows blue screen on boot for file winhv.sys
Environment
- Cove Data Protection (Cove)
Solution
- The issue occurs because the Hyper-V role cannot start within a virtual environment
- To resolve:
- Boot into safe mode
- Disable the Hyper-V Hypervisor Role from starting in the virtual machine.
- Open an Administrator Command Prompt
- Run the following command:
- BCDEDIT /set hypervisorlaunchtype off
- Reboot the machine
- This means the hypervisor setting is disabled so if the virtual machine has it's own virtual machines then the option will need to be re-enabled
- To re-enable Hyper-V after the restore execute:
- Open an Administrator Command Prompt
- Run the following command:
- BCDEDIT /set hypervisorlaunchtype auto
- Reboot the machine