Dropbox: Removing Sharing and Removing Your Access

To unshare a folder or file that you own

1. Locate the folder and select Share folder (or icon).
2. Select the gear icon (settings) in the lower-right corner of the window.
3. Select Unshare folder at the bottom left.
4. Confirm you want to unshare. You can choose to allow members to keep a copy of the files or delete them entirely for everyone. 

To remove your access to a file or folder that has been shared with you

1. Hover over the folder or file and click the three vertical dots (more options).
2. Select Manage Permissions.
3. Select the dropdown arrow next to your name and select Remove my access.