For those who are struggling to create service accounts:

Open PowerShell

Import-Module Activedirectory

Create the Service Account:

New-ADServiceAccount -name <Service Account Name> -Enabled $true -DNSHostName <Service Account Name>.domain.com -PrincipalsAllowedToRetrieveManagedPassword "<Group or Computer>"

Example:

New-ADServiceAccount -name MSA1 -Enabled $true -DNSHostName MSA1.domain.com -PrincipalsAllowedToRetrieveManagedPassword "Sql Server Group"

Add computer to service account:

Add-ADComputerServiceAccount -Identity <Servername> -ServiceAccount <Service Account Name>$

Example:

Add-ADComputerServiceAccount -Identity SQL1 -ServiceAccount MSA1$

Install Service Account:

Install-ADServiceAccount -Identity <Service Account Name>$

Example:

Install-ADServiceAccount -Identity MSA1$

To test to see if this has worked:

Test-ADServiceAccount -Identity <Service Account Name>$

Example:

Test-ADServiceAccount -Identity MSA1$