HyperV - A fatal error has occurred. Where to reference for error codes?

Question

HyperV showed the following error when a VM started.

A fatal error has occurred in 'MyVM'. The guest operating system has the following error code: An error has been reported. ErrorCode0: 0x8, ErrorCode1: 0x81000004130A0000, ErrorCode2: 0x7F5EFA2723DF, ErrorCode3: 0x40000000, ErrorCode4: 0x7FFFA3289880. If the problem persists, please contact the product support of the guest operating system.

Is there documentation that documents these error codes?

ErrorCode0: 0x8
ErrorCode1: 0x81000004130A0000
ErrorCode2: 0x7F5EFA2723DF
ErrorCode3: 0x40000000
ErrorCode4: 0x7FFFA3289880

Could someone please give an insight into what these error codes could mean?
Thank you.

Answer 1

Hi,

When do we get the error message, do you get the error message when right click the VM>"start" in hyper V manager, or the VM is running in Hyper V manager, while failed to start the system?

If we can't make the VM start in the Hyper V manager, please see below:

It seems the error are all refer to the below error message: cderr dialogfailure

The error message is limited to troubleshoot, please also open event viewer, then turn to Applications and Services>Microsoft>Windows>Hyper V VMMS and Hyper V worker, check if there's any related error log about the VM start up failure.

If the VM can start in hyper v manager, while failed to load the system, it's recommended to refer to system performance forum for better help.

Thanks for your time!
Best Regards,
Anne

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Answer 2

Even this error show in the event log, OS (Tiny Core 10 with Kernel 4.19.10) start and runs normally.