SQL Server 2016 Upgrade Hung at sqlrsconfigaction_upgrade_configrc_cpu64

When performing an upgrade of Microsoft SQL Server 2014 to SQL Server 2016 the install/upgrade seemed to hang at the very end.

The following status was displayed:
sqlrsconfigaction_upgrade_configrc_cpu64

I found that the only SQL Server service still running was:
SQL Full-text Filter Daemon Launcher

Manually stopping this service allowed the upgrade/installation to continue and complete successfully!