I currently have LR 6.0 on a windows 10 os. LR constantly watches one of my hard drives. I never set that up as a watched folder or have ever enabled auto import. How can I make it stop?
Go to File > Auto Import > Auto Import Settings, and uncheck Enable Auto Import.
Other than that, you should update LR to the latest version, 6.6.1.
If you have problems using Help > Update, download the update from here: Keeping Lightroom Up-to-Date
Do File > Enable Auto Import to enable or disable the auto importing.