NM: Some Migration workers not migrating: Error: OOM Logon Error (4297798)

Issue

We received this error message in the log:

failedTeddy:06/10 12:38:12 Error: OOM Logon Error:
Code = 800706be
Code meaning = The remote procedure call failed.
Source = (null)
Description = (null)Teddy:06/10 12:38:12 Error: Failed to initialize : Mandie Gilchrist
! 06/10 12:38:12 Error: OOM shutting down:
Code = 800706ba
Code meaning = The RPC server is unavailable.
Source = (null)

Solution

Make sure there's a MAPI profile named CMTe, and it is set as the default MAPI profile.
One of the services is not started.  Try loading Outlook.  If you receive an error, click yes to start the "RPC" service.
The queued migrations should start immediately.