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Configure Move/Migration between Hyper-V hosts

Details
Category: Hypervisors
Read Time: 3 mins
Published: 18 February 2025

By default on a fresh new installation you will get an error when trying to move VM's between two Hyper-V hosts.
Something in de line of "no credentials are available in the security package Hyper-V"
If I remember correctly, this has to do with Microsoft changing the way the servers communicate to make it more secure. Sadly Microsoft doesn't automatically configure this for you even in the 2019 version of Hyper-V.

Read more: Configure Move/Migration between Hyper-V hosts

Configure Hyper-V GPU passthrough

Details
Category: Hypervisors
Read Time: 5 mins
Published: 18 February 2025

I feel like GPU passthrough is much easier done on other hypervisors like ESXi but alas... I can't be bothered to migrate my entire environment to ESXi.
I put some time and effort in trying to figure out how this is done, i'm running Hyper-V Server Core 2016 and the RemoteFX option isn't enabled or can be enabled at all.
Something about Microsoft and security leaks. But thank god it's still possible to configure GPU passthrough to your Hyper-V VM's!

Read more: Configure Hyper-V GPU passthrough

Unable to prepare migration. Network address "HOST" is not valid for migration.

Details
Category: Hypervisors
Read Time: 1 min
Published: 18 February 2025

When trying to live migrate VM's and you encounter this error, it means that the hostname of the ESXI host could not be resolved properly.
This is because the DNS server is unreachable/offline or you recently changed DNS servers and the ESXI host doesn't know it yet.

Read more: Unable to prepare migration. Network address "HOST" is not valid for migration.

VMware vSAN configuration broken

Details
Category: Hypervisors
Read Time: 5 mins
Published: 18 February 2025

You performed maintanance, updates, whatever and suddenly your vSAN configuration breaks. VM's start dropping like flies, nothing will come up. And you find out the vSAN configuration broken which makes you very sad.

Read more: VMware vSAN configuration broken

Hyper-V VM: 'Virtual machine' failed to start worker process: The computed authentication tag did not match the input authentication tag.

Details
Category: Hypervisors
Read Time: 1 min
Published: 18 February 2025

You try to enable TPM on virtual machine, and once you start it up you encounter the error: 'Virtual Machine' failed to start worker process: The computed authentication tag did not match the input authentication tag (0xC000A002). 

Read more: Hyper-V VM: 'Virtual machine' failed to start worker process: The computed authentication tag did...

Feel free to use any information you might find here. I keep it as a repository for things I might need later in the future.

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