If you are using SCVMM 2012 and try to migrate a VM from one cluster to another, then migration will probably fail with error 0x8007274D.
The extended error message is:
Migration check for virtual machine <serverName> failed to create a planned virtual machine in the target host. Detailed error message: The Virtual Machine Management Service failed to establish a connection for a Virtual Machine migration with host serverName.contoso.com: No connection could be made because the target machine actively refused it. (Ox8007274D).
To solve this - go to destination host in SCVMM, select Properties and in the Migration Settings click to "Use any available network":
The issue is explained in this KB2853203 article