This happened in Windows 7, as well. I have an external hard drive connected to my desktop computer that I want to share with all my devices (2 laptops, plus Android devices). I did the following steps to share it: 1. In File Explorer, I right-clicked on the drive and picked Share With->Advanced Sharing 2. Clicked on Advanced Sharing button 3. Checked "Share this folder", set a name and clicked Permissions 4. Gave Everyone proper permissions, then OK'ed my way out. Now, I can access the share from my laptops, and sometimes from Android, but ONLY when I'm logged in as me (admin) on my desktop. If I log out of my account, the share is unavailable to all other devices. I then went into Advanced Sharing Settings in the control panel, and enabled all the sharing and network discovery options there. I disabled password-protected sharing just to troubleshoot. This made no difference. I need to be able to have other computers access the share regardless of who is logged in on the desktop computer. Can anyone offer some advice?