@VJ-8370 Thank you for contacting us!
‘Complete Migration’ seems to have timed out due to communication issues with CS.
‘Complete Migration’ task will try to ‘disable replication’ which does the clean up of the replica disks on Azure and updates the On-premises configuration server as well about the disable replication state. This task at communicating to CS probably is timing out.
You should use ‘Remove’ option from the Azure portal to remove the replication item configuration.
For VMware to Azure - https://learn.microsoft.com/en-us/azure/site-recovery/site-recovery-manage-registration-and-protection#disable-protection-for-a-vmware-vm-or-physical-server-vmware-to-azure which will NOT delete the failed over VM in Azure.
Hyper-V to Azure - https://learn.microsoft.com/en-us/azure/site-recovery/site-recovery-manage-registration-and-protection#disable-protection-for-a-hyper-v-virtual-machine-hyper-v-to-azure
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