System Center Virtual Machine Manager Errors and Resolutions

Error Message:

Error (415)
Agent installation failed copying 'C:\Program Files\Microsoft System Center\Virtual Machine Manager\agents\I386\IRV-VMM01\msiInstaller.exe' to '\\IRV-HYPERV06\ADMIN$\msiInstaller.exe'.
The specified network name is no longer available

Recommended Action
Ensure '\\IRV-HYPERV06\msiInstaller.exe' to '\\IRV-VMM01' is online and not blocked by a firewall.
Ensure that file and printer sharing is enabled on 'IRV-VMM01\msiInstaller.exe' to '\\IRV-HYPERV06' and it not blocked by a firewall.
Ensure that WMI is enabled on 'IRV-VMM01\msiInstaller.exe' to '\\IRV-HYPERV06' and it is not blocked by firewall.
Ensure that there is sufficient free space on the system volume.
Verify that the ADMIN$ share on 'IRV-VMM01\msiInstaller.exe' to '\\IRV-HYPERV06' exists. If the ADMIN$ share does not exist, restart 'IRV-VMM01\msiInstaller.exe' to '\\IRV-HYPERV06' and then try the operation again.

Fix:

Open firewall ports required by SCVMM:
TCP/22
TCP/80
TCP/135
TCP/139
TCP/445
TCP/443
TCP/623
TCP/1433
TCP/5985
TCP/5986
TCP/8530
TCP/8531
TCP/8100
TCP/8101
TCP/8102
TCP/49152 to TCP/65535

Source: https://learn.microsoft.com/en-us/system-center/vmm/plan-ports-protocols?view=sc-vmm-2019

Error:

Error (10421)
The specified user account cannot be the same as the VMM service account.

Fix:

Create a service account to be used to install VMM clients onto Hyper-V hosts. This new service account must be a member of the local Administrators group of the Hyper-V hosts.