312 - AccountServer service unable to start at install using MS SQL 2012

Symptom

Configuration:
MS SQL 2012. Service running as Local System
AccountServer Install steps - selected option 'Use a local instance of SQL Server'

After clicking on Apply (last setup step - Configuration Summary), a popup appears stating:
AS_Service failed to start. Please see the logs for more information.

The error in the ASError log:
11:00:04.513 (06) Error: SQL server reported the following error: Cannot open database "StoragePlatform" requested by the login. The login failed.
Login failed for user 'NT AUTHORITY\SYSTEM'.. System.Data.SqlClient.SqlException (0x80131904): Cannot open database "StoragePlatform" requested by the login.
The login failed. Login failed for user 'NT AUTHORITY\SYSTEM'.
at System.Data.SqlClient.SqlInternalConnection.OnError....

Cause

The Local System account does not have the required permissions to access the database.

Solution

1. In MS SQL Server Management Studio:
   
   1. Select Security > Logins > NT AUTHORITY\System
   2. View the Properties (right-click, select Properties)
   3. Select Server Roles
   4. Select Sysadmin
   5. OK to apply
2. Start the AccountServer service.

If the service still does not start:

1. In SQL Server Configuration Manager:
   
   1. Select SQL Server Network configation > Protocols for MSSQLSERVER (where MSSQLSERVER is your SQL instance name)
   2. Enable:
      • Named Pipes
      • TCP/IP
   3. Restart the SQL service
2. Start the AccountServer service.