How can there be guests on my excel sheet that i did not give access to??

I am having the same issue. I shared an excel file with 1 person, sent a link via email to their Gmail, and now have 2 'Guests' - Juniper and Pepperwood - and I cannot remove them. I removed access to the 1 person I shared the link with, yet the 2 guests still show up in my file. I cannot delete the file, rename, etc. as they are still in the file. Under "Manage Access", there is no one else to remove. The person I originally shared with is also unable to remove the access, as suggested by Shakiru.

I don't think these are random guests looking at your spreadsheet. I think for some reason the user "id" of the people you have shared it with are not getting recognized and excel assigns a random "guest" name. We were given "citrus" and "crabwood". It was obvious it was us as the cells we clicked in became highlighted as we moved around the spreadsheet. Not sure why this is happening however.

I have the same problem. Coralberry and Corriander have it open. I can't even delete the file as it is open by someone else! This is crazy.

This is not the person I shared with as she does not have the file open and I removed her access. I can't even delete the file!

Same issue here. I've removed the Link entirely, revoked access except to my co-workers and "Cogwell" (guest) is showing up.

Talk about losing my composure. These are private spreadsheets for a reason. Microsoft needs to get it together.