If you install R Services (In-Database) separately from the Database Engine in Microsoft SQL Server 2016 and if their versions are different, the SQL Server Launchpad service may fail to start. Additionally, error messages that resemble the following are logged in the SQL Server error log:
A timeout was reached (30000 milliseconds) while waiting for the SQL Server Launchpad (BI_DW) service to connect.
The SQL Server Launchpad (BI_DW) service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.