RD connection broker requires WinRM enabled and TLS 1.0 enabled

RD connection broker requires WinRM enabled and TLS 1.0 enabled to install, check the below registry settings as prerequisite and see if it helps.

Enable WinRM

‘HKLM:\SOFTWARE\Policies\Microsoft\Windows\WinRM\Service’ -Name ‘AllowAutoConfig’ -Value 1 -Type Dword

‘HKLM:\SOFTWARE\Policies\Microsoft\Windows\WinRM\Service’ -Name ‘IPv4Filter’ -Value * -Type String

‘HKLM:\SOFTWARE\Policies\Microsoft\Windows\WinRM\Service’ -Name ‘IPv6Filter’ -Value * -Type String

Enable TLS 1.0 client

‘HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client’ -Name ‘Enabled’ -Value 1 -Type Dword

‘HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client’ -Name ‘DisabledByDefault’ -Value 0 -Type Dword