Hello Michael,
It is a known issue by now because Windows Server 2016 + Essentials does not default to TLS 1.2. The solution is to run the Powershell commands from below and reboot the server. After that try to run the wizard again.
Pls, run this Powershell from an elevated Powershell prompt
# PowerShell
New-ItemProperty -Path "HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v2.0.50727" -Name "SystemDefaultTlsVersions" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v2.0.50727" -Name "SchUseStrongCrypto" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319" -Name "SystemDefaultTlsVersions" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319" -Name "SchUseStrongCrypto" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\.NETFramework\v2.0.50727" -Name "SystemDefaultTlsVersions" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\.NETFramework\v2.0.50727" -Name "SchUseStrongCrypto" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\.NETFramework\v4.0.30319" -Name "SystemDefaultTlsVersions" -Value 1 -PropertyType DWORD -Force
New-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\.NETFramework\v4.0.30319" -Name "SchUseStrongCrypto" -Value 1 -PropertyType DWORD -Force
answered 05/16/2021 07:43