I’m not a Mac user but by boss is. Here’s an issue he ran into, in his own words.
So, spotlight (search) has stopped working on my Macbook. I believe it stopped working, I suspect, when I enabled TimeMachine to back it up. I’ve been following the instructions for how to fix, multiple different methods and nothing has worked. What this impacts is search doesn’t work in Outlook, which is a real pain in the neck. I’ve tried adding and removing the outlook folder from the Privacy settings, using Terminal to tell spotlight to rebuild the indexes. I can see spotlight rebuilds indexes but it still seems to miss it for Outlook. I’d love to see if there’s another solution I can try. Some have suggested removing and reinstalling Office 365 or reimaging the machine. Both of those have mixed results.