Time Machine backups are but one of 70-80 background services which are run by macOS dispatching systems. Here’s a list of some of the others.
softwareupdate
If there’s one update that we need, it is an App Store app which works reliably. The current one suffers from general dystopia.
Installing a Combo update of OS X is a popular panacea for puzzling problems. But you need to do a bit more to complete the job.
