After updating to Windows 10 (1809), I realized that Microsoft did not have a download for RSAT 1809. They highest version was 1803. Here, I will share what I had to do to get RSAT on Windows 10 1809.
Microsoft Moved RSAT to Optional Features
In the Settings of Windows, go to Apps, then Manage optional features.
Here you can select the RSAT apps that you want to install.
After clicking install, the ‘page’ will refresh. If the app that you ‘installed’ reappears, then it wasn’t installed. (See ‘Turning Off UseWUServer’ below)
If it disappeared, then it installed. **You may have you reboot for it to show in your Windows Administrative Tools folder**.
Turning Off UseWUServer
If you notice that everytime you select to install an RSAT Optional Feature, it reappears. Then you may need to turn off the UseWUServer. To do this:
Change the registry value to from 1 to 0 for “UseWUServer” at HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU.
Restart the wuauserv service. Then retry installing the RSAT Optional Features.
Checking Installed RSAT Services
Open PowerShell as an Administrator and run
Get-WindowsCapability -online | ? Name -like Rsat* | FT