Shared folder "Access is Denied" between Windows computers

I have been trying for hours to accomplish what I thought would be an easy task, but am utterly baffled by Windows file sharing permissions. Please help me.

PC1 - Server - contains a shared folder called "backups"

PC2 - desktop

1. Created a user on server
2. Gave that user "Full Control" under "Share Permissions" tab
3. Navigated to \\server from my desktop and put in the user/pass
4. I can see the folder. When I click on it, Windows tells me "Access is Denied."

I've tried:

• Restarting
• Logging in/out
• Changing HomeeGroup sharing from "Allow Windows to Use user accounts"

As I can see from your description you want to share a directory.
Since you use Windows 8 and I can see the "Security" tab you are using NTFS-filesystem.
It seems like you didn´t configure NTFS-permissions.

• Click on the "Security" Tab of the Folder you want to share.
• Then "Edit..."
• In the new window click "Add..."
• In the new window click "Advanced..."
• In the new window click "Find Now..."
• Select the user who needs the permission to acces the folder.
• Go back to the "Permissions for " dialog.
• Choose the user you added.
• Set permission to "Allow" / Full controll (Or at least read permission)
• Click Apply.

On the sharing tab, the only entry you Need is:

• Everyone
• With permission "Full Controll".

You can manage the permissions with the NTFS-Permissions of the Security Tab.

The rest of the configuration looks correct.