Not sure if you have solved your problem and also not sure my solution will apply to you but here it is just in case ...
My message was slightly different from yours
"Home is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. Access Denied.”
For a long time I tried to figure it out, then gave up and just ran back and forth with a USB memory stick. Decided to have another look and actually ran across a solution that was simple and did the job! Problem Solved! and I have no clue how or why ... Just thankful there are so many people out there smarter than me that are willing to share with the rest of us.
I used the following info to make a registry change on the primary computer that I could not access from the other computers in my network. Remember to back up your registry before trying to edit it
You Might Not Have Permission to use this network resource
Here's what ya really need to do to fix the problem... Straight from the DragonWiz the problem can occur if
Restrictanonymous is set to 1
1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then double-click the following registry subkey:
3. In the right pane, double-click restrictanonymous.
4. Make sure that the value in the Value data box is set to 0, and then click OK.
5. Close Registry Editor.
6. Restart the computer.
This completely eliminated my problem! Perhaps it will work for your situation.