By default, Windows 10 backs up the registry to the RegBack folder when the computer restarts, and creates a RegIdleBackup task to manage subsequent backups. Windows stores the task information in the Scheduled Task Library, in the Microsoft\Windows\Registry folder. The task has the following properties:

Starting in Windows 10 1803, Windows no longer automatically backs up the system registry to the RegBack folder. If you browse to to the \Windows\System32\config\RegBack folder in Windows Explorer, you will still see each registry hive, but each file is 0kb in size.

Enable Registry Backup

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Configuration Manager]
"EnablePeriodicBackup"=dword:00000001

 Source: tenforums.com

Download the content from the Microsoft Security Compliance Toolkit 

Quelle: Microsoft

RSAT (Remote Server Administration Tools) in Windows 10 v1809 and v1903 are no longer a downloadable add-on to Windows. Instead its included as a set of "Features on Demand" directly in Windows.

Install Script

RSAT (Remote Server Administration Tools) in Windows 10 v1809, v1903 and v1909 are no longer a downloadable add-on to Windows. Instead its included as a set of  "Features on Demand" directly in Windows.

The script will only run on Windows 10 v1809 or v1903 or v1909.

The script requires administrative rights as well as access to the Internet (RSAT is installed through Microsoft Update).

The script is built around Get-WindowsCapability, Add-WindowsCapability and Remove-WindowsCapability.

The script comes with 4 options:

• .\Install-RSATv1809v1903v1909.ps1 -All (-All is installing ALL the features within the RSAT bundle)
• .\Install-RSATv1809v1903v1909.ps1 -Basic (-Basic is only installing AD DS, DHCP, DNS, Group Policy Management and Server Manager)
• .\Install-RSATv1809v1903v1909.ps1 -ServerManager (-ServerManager is only installing the Server Manager)
• .\Install-RSATv1809v1903v1909.ps1 -Uninstall (-Uninstall removes all RSAT features again)

Source: imab.dk

Modify the script if you have FOD offline available:

[CmdletBinding()]
param(
[parameter(Mandatory=$false, ParameterSetName = “Install”)]
[ValidateNotNullOrEmpty()]
[switch]$All,
[parameter(Mandatory=$false, ParameterSetName = “Install”)]
[ValidateNotNullOrEmpty()]
[switch]$Basic,
[parameter(Mandatory=$false, ParameterSetName = “Install”)]
[ValidateNotNullOrEmpty()]
[switch]$ServerManager,
[Parameter(ParameterSetName = “Install”, Mandatory=$true)]
[ValidateNotNullOrEmpty()]
[string]$FoDMediaPath,
[parameter(Mandatory=$false, ParameterSetName=”Default”)]
[ValidateNotNullOrEmpty()]
[switch]$Uninstall
)

and the add part:

Add-WindowsCapability -Online -Name $RsatItem -Source $FoDMediaPath -LimitAccess

Through set parameter the param FoDMediaPath is only needed within the installation switch
Install-RSATv1809v1903.ps1 -FoDMediaPath [-All] [-Basic] [-ServerManager] []
Install-RSATv1809v1903.ps1 [-Uninstall] []