Access Denied error when tapping a share on your Mac

Follow these steps to change access rights on a shared folder:

1. Start the 'System Preferences' App
2. Select 'Sharing'
3. From the 'Services' list on the left, click 'File Sharing' (which should be ticked)
4. Choose the shared folder from the 'Shared Folders' list
5. To add a user, click + under the 'Users' list and choose your account
6. Change permissions from 'Read Only' to 'Read & Write' to allow remote file changes
7. If you still can't access files in the folder, right-click the folder in the 'Shared Folders' list and select 'Apply Permissions to Enclosed Items'