no links/VBA/addons, but : Microsoft excel waiting for another application to complete an ole action

I started having this same issue yesterday, trying to open my daily spreadsheet with no links or anything unusual - just a plain spreadsheet. I have my Excel files stored in MS OneDrive. Opening it on the website and downloading it to my computer allows me to open it, but this isn't optimal as I have a lot of files I use and my computer storage is limited. I will probably try deleting and reinstalling Office but not really sure why this would be an issue, all of a sudden. Worked fine on Sunday, problem on Monday. Very frustrating.