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Hyper-v catastrophic failure (0x8000ffff) – How we fix it!

Are you stuck with hyper-v catastrophic failure (0x8000ffff)? We can help you fix it.

There are multiple occasions for this error to occur. The common ones are when trying to delete a checkpoint or after upgrading Windows.

Here at Bobcares, we often receive requests regarding to fix Hyper V errors as a part of our Server Management Services.

Today, let’s see how our Support Engineers fix hyper-v catastrophic failure (0x8000ffff)

Causes for the Catastrophic failure (0x8000FFFF)

This error commonly occurs when we try to delete the checkpoint. Another possibility is when we try to upgrade windows in the host server.

Also, occurs when we try to increase the CPU core and can occur when starting the virtual machine.

The cause for this error is the configuration file references a VM checkpoint data set is lost or does not exist.

Thus, to resolve this we need to restore the checkpoint or the virtual machine. Else we need to edit the virtual machine configuration to resolve the error.

The sample error looks like:

hyper-v catastrophic failure (0x8000ffff)

Let us discuss how our Support Engineers resolve the error for our customers.

 

How we fix Hyper-v catastrophic failure (0x8000ffff)

Recently one of the customers contacted us saying that he is unable to delete the checkpoint. Thus, there was no backup of the whole Virtual machine.

In most of the cases, a clean VM restart will resolve the error. But still, the error persisted.

Thus, the available option is to edit the virtual machine configuration file to resolve the error. Let us discuss how our Support Engineers resolve this error by editing the configuration file.

First, we open the command prompt with administrator privileges.

Then we run the command

Net stop vmms

Now a message prompt to stop the Remote Desktop Virtualization Host Agent service appears. We enter yes to proceed further.

Then we navigate to the virtual machine’s folder. After that, we open the configuration XML file of the virtual machine.

In the file, we find the VDEVVersion tag. The default value is 512.

<VDEVVersion type="integer">512</VDEVVersion>

We reduce the value to 256, and we save the XML file.

In the command prompt, we run the following command

Net start vmhostagent

After that finally, we start the virtual machine.

 

[Need assistance to fix Hyper-V errors – We can help you fix it]

 

Conclusion

In short, we have discussed the causes of the error. Also, we have discussed how our Support Engineers fix hyper-v catastrophic failure (0x8000ffff) for our customers.


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