Hyper-v replication problem

hello,

i have two hyper-v servers and there is no active directory on network i want to enable mirroing on both servers.

when i tried to configure it and using kerberos i get this error:

[Window Title]
Enable Replication

[Main Instruction]
Enabling replication failed.

[Content]
Hyper-V failed to enable replication.

Hyper-V failed to authenticate using Kerberos authentication.

[Expanded Information]
Hyper-V failed to enable replication for virtual machine 'HR-SRV1': No credentials are available in the security package (0x8009030E). (Virtual Machine ID D1E6FB1B-B80B-4180-92F0-A6930CC6D752)

Hyper-V failed to authenticate the Replica server v1-srv. using Kerberos authentication. Error: No credentials are available in the security package (0x8009030E)

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so whats the problem?

thanks.