Tracking shared file access
I need to know who has accessed the shared files on One Drive- You should have a list of who accessed and or downloaded files and the date.
Sherry Reyes commented
Not only should this be done at the file access but the folder access as well. This needs to be part of the overall logging for both internal and external sharing.
If you want to share files privately with one person and want them to be able access without a password...of course you want to do that regardless of the email account they use. Why would you only care about that for someone who also has an outlook account only. THATS NOT HOW THE REAL WORLD WORKS.