Fix Remote Desktop Connection "Internal Error has Occurred"

Step 1

Remove the expired RDP cert
Open Certificates (Local Computer)
Expand Remote Desktop --> Certificates
Delete the expired certificate
If there is no cert listed, that is fine.

Step 2

Fix the owner on the corrupt file.
Browse to C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys
Locate the file starting with f686aace
Right click and select properties --> Security --> Advanced
Change the owner to "Administrators"  or "SYSTEM"
Click OK
Backup the file (optional)
Rename or delete the file starting with f686aace

Open services
Restart "Remote Desktop Service"

source:
https://levitrares.com/host-https-social.technet.microsoft.com/Forums/ie/en-US/a9c734c1-4e68-4f45-be46-8cae44c95257/unable-to-remote-desktop-to-windows-server-2012-due-to-failed-to-create-self-signed-certificate?forum=winserverTS

Create DHCP scope with powershell

Create scope:

 Add-DhcpServerv4Scope -Name "dhcp.contoso.com" -StartRange 10.110.0.10 -EndRange 10.110.0.250 -SubnetMask 255.255.255.0 -LeaseDuration 8.00:00:00

 

Set scope options:
Set-DhcpServerv4OptionValue -ComputerName "dhcp.contoso.com" -ScopeId 10.110.0.10 -DnsServer 10.110.0.2,10.110.0.3 -WinsServer 10.110.0.2 -DnsDomain "contoso.com" -Router 10.110.0.1