When I installed the VRA on the Hyper-V host, the progress bar stopped at 5% for a long time. Finally, it occured an error: “SCVMM poweshell command Read-SCVirtualMachine with arguments System.Management.Automation.Runspaces.CommandParameter has timed out”
Reviewing the support ticket you submitted, it seems that the root cause of this issue was that you had previously installed Zerto before, but there were some left over Zerto-related remnants left in the regedit that needed to be cleaned. Upon doing so, the issue was resolved.
Hope this helps others if they have this issue.