Server has IIS but no 443, it was a previous attempt to P2V but VM Agent has been removed.
I have changed port with no luck.
About ready to rebuild server again from scratch. Server is only running Hyper-V and scvmm with all updates
There is already an SSL certificate associated with port 443 on machine tbcdc03.
Ensure that no application on machine tbcdc03 listens for HTTP traffic on TCP port 443 during the conversion. Alternatively use registry key HKLM\Software\Microsoft\Microsoft System Center Virtual Machine Manager Server\Settings\P2VBITSTcpPort on the VMM server to change the P2V transfer port number and add the necessary firewall rule for TCP port 443 on machine tbcdc03.
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