A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If your goal is to prevent the nag in Word and Excel files while keeping your folder connection to OneDrive, the BAT file or Powershell script methods work very well. For instructions, see the two comments at page 3 of this thread, about 2/3 down (https://answers.microsoft.com/en-us/msoffice/forum/all/stop-office-backup-this-document-prompt/24143ada-e447-4c72-aa37-4324c88a5e7c). I use the BAT file approach, which has worked very well (with occasional misses). Microsoft really should let us eliminate the nag, but they probably won't. At least this tactic works, though who knows for how long. You have to use other methods to prevent automatic "backups" (transfers) to OneDrive.